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疑問詞のWhy - 英文法を覚えよう

Whyとは何か?

「Why」は疑問詞の一つで、英語で「なぜ」を表す単語です。日本語で疑問を表す際に頻繁に使われる言葉で、日常的に使われる場面が多いです。

例えば、次のような例文があります。

例文 1:

Why are you studying English?(なぜ英語を勉強していますか?)

この例文では、「なぜ」の理由を尋ねるために「Why」が使われています。

例文 2:

Why did you go to the park?(なぜ公園に行ったのですか?)

この例文でも、「なぜ」の理由を尋ねるために「Why」が使われています。

日本語と同じように、英語でも「なぜ」という疑問を尋ねる際には「Why」を使います。

Why+be動詞の疑問文

次は「Why+be動詞の疑問文」について解説します。この形式の疑問文は、意味が「なぜ〜ですか?」となります。

「Why」と一緒にbe動詞を使うことで、状態や特徴に関する理由を尋ねることができます。具体的な例文を見ていきましょう。

例文 1:

Why are you tired?(なぜ疲れていますか?)

この例文では、「なぜ」の理由を尋ねるために「Why」を使い、be動詞の「are」を使って疑問文を作っています。

例文 2:

Why is the sky blue?(なぜ空は青いですか?)

この例文では、「なぜ」の理由を尋ねるために「Why」を使い、be動詞の「is」を使って疑問文を作っています。

この形式の疑問文では、ある状態や特徴が存在する理由について尋ねることができます。例えば、なぜある人が疲れているのか、なぜ空が青いのかなどの理由を尋ねます。

Why+一般動詞の疑問文

次は「Why+一般動詞の疑問文」について解説します。この形式の疑問文は、意味が「なぜ〜か?」となります。

「Why」と一緒に一般動詞を使うことで、ある行動や好み、理由を尋ねることができます。具体的な例文を見ていきましょう。

例文 1:

Why did you eat pizza for dinner?(なぜ夕食にピザを食べたのですか?)

この例文では、「なぜ」の理由を尋ねるために「Why」を使い、過去形の動詞「did」を使って疑問文を作っています。

例文 2:

Why do you like playing soccer?(なぜサッカーが好きなのですか?)

この例文では、「なぜ」の理由を尋ねるために「Why」を使い、現在形の動詞「do」を使って疑問文を作っています。

この形式の疑問文では、なぜある行動をしたのか、なぜある好みがあるのかなどの理由を尋ねることができます。例えば、過去の出来事や現在の習慣について質問したいときに使えます。

Why don’t you+動詞+〜?

最後に「Why don’t you+動詞+〜?」という表現について解説します。この形式は、他人に対して提案やアドバイスをする際に使われ、「〜してみてはどうですか?」という意味を表します。

この表現を使うことで、相手に対してアイデアを提案したり、アクションを促すことができます。具体的な例文を見てみましょう。

例文 1:

Why don't you try playing the guitar?(ギターを弾いてみてはどうですか?)

この例文では、「〜してみてはどうですか?」という提案をするために、「Why don't you」を使い、動詞の「try playing」を組み合わせています。

例文 2:

Why don't you go on a trip during the holidays?(休暇中に旅行してみてはどうですか?)

この例文では、「〜してみてはどうですか?」という提案をするために、「Why don't you」を使い、動詞の「go on a trip」を組み合わせています。

この形式の表現では、相手に対して積極的な提案やアドバイスをすることができます。相手に対して新しい経験を促したり、アイデアをシェアしたいときに便利な表現です。

フォニックス
フォニックス発音練習【1】 短母音(A、E、I、O、U)、子音(B,K,D,F,G,H,J,L,M,N,P,Qu,R,S,T,V,W,X,Y,Z,softC,hardC,softG,hardG)
フォニックス発音練習【2】母音ペア(AI、AY、EI、IE、EA、EE、OA、OW、UE,UI、OI、OY、OU、OO、AU、AW)、Rが付いた母音(AR、ER、IR、UR、OR、ORE、EAR、AIR、ARE)、子音ダイヤグラフ(CH、SH、TH、CK、WH、GH、PH)、サイレントE
フォニックス発音練習【3】 子音ブレンド(BL,CL,FL,GL,PL,BR,CR,DR,FR,GR,PR,TR,SC,SK,SM,SN,SP,ST,SW,SQU,SCR,SPL,SPR,STR,THR)
中学英単語
人称代名詞【1】 I, my, me, mine, you, your, you, yours, he, his, him, his, she, her, her, hers, it, its, it, we, our, us, ours, they, their, them, theirs
代名詞【2】 this, these, that, those, myself, yourself, himself, herself, ourselves, everybody, somebody, nobody, everyone, someone, anyone, none, everything, something, anything, nothing, each, other, another, all, both
be動詞・助動詞・疑問詞【3】 be, am, are, is, was, were, do, dose, did, can, cannot, could, will, would, may, might, must, shall, should, have to, who, whose, whom, what, which, when, where, why, how, how many, how much, how old
冠詞・間投詞・接続詞・省略形【4】 be, am, are, is, was, were, do, dose, did, can, cannot, could, will, would, may, might, must, shall, should, have to, who, whose, whom, what, which, when, where, why, how, how many, how much, how old
前置詞【5】 about, above, across, after, against, along, around, as, at, before, behind, below, beside, between, among, by, down, during, except, for, from, in, to, into, of, on, onto, minus, near, outside, over, since, than, through, toward, under, until, up, upon, with, without
名詞(数)【6】 zero, one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen, twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety, hundred, thousand, million
名詞(曜日・月・Ac-Af)【7】 Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, January, February, March, April, May, June, July, August, September, October, November, December, accident, acid rain, action, active volcano, activity, actor, actress, address, adult, advantage, adventure, advice, affection, Africa, afternoon
名詞(Ag-Ba)【8】 age, air, air conditioner, air pollution, airport, album, ambulance, America, American, amusement park, ancestor, anchor, animal, animation, ant, apple, architect, area, arm, art, artist, arts and crafts, Asia, assistance, astronaut, athlete, atomic bomb, attack, attention, aunt, Australia, autumn, baby, back
名詞(Ba-Bo)【9】 backyard, badge, bag, ball, balloon, ballpark, bank, barrier, baseball, basketball, bath, bathroom, bazaar, beach, bear, beauty, bed, beginner, beginning, Beijing, belief, bicycle, bike, biotechnology, bird, birthday, blanket, blood, blossom, board, boat, body, bomb
名詞(Bo-Ca)【10】 book, border, bottle, bottom, box, boy, boycott, braille, branch, Brazil, bread, breakfast, breath, breeze, bridge, British, broadcasting, brother, brotherhood, buffet, building, burger, bus, business, button, cafeteria, cage, cake, calligraphy, camera, campaign, Canada, cancer
名詞(Ca-Ch)【11】 candy, cap, capital, captain, car, card, care, carpenter, carrot, carton, cartoon, case, cat, cattle, cause, cave, CD, ceiling, cell, cent, center, centimeter, century, cereal, chain, chair, championship, chance, character, charity, chart, chemical, cherry
名詞(Ch-Co)【12】 chicken, child, children, China, Chinese, chopsticks, chorus, Christmas, church, city, class, classmate, classroom, clerk, clock, cloth, clothes, cloud, club, coffee, collection, college, color, comic, communication, company, computer, concert, conclusion, condominium, conductor, conference, connection
名詞(Co-De)【13】 convenience, conversation, cook, cooperation, corner, costume, country, countryside, couple, courage, course, cousin, cow, crane, creativity, creature, crop, cuisine, culture, cup, curry, curtain, custom, cut, dance, dancer, danger, date, daughter, day, deadline, death, decision
名詞(De-Do)【14】 deer, degree, democracy, demonstration, dentist, desert, desk, despair, detective, developing country, diary, dictionary, difference, difficulty, dignity, dinner, dinosaur, director, disaster, discussion, disease, display, distance, diver, doctor, dog, doll, dollar, dolphin, dome, door, doorbell, dot
名詞(Dr-Ev)【15】 drama, dream, dress, driver, drum, e-mail, e-pal, ear, earth, earthquake, east, echo, egg, Egypt, electricity, elephant, emergency, end, endangered animals, energy, engine, engineer, England, entrance, envelope, environment, episode, equality, era, eraser, Europe, evacuation, evening
名詞(Ex-Fi)【16】 examination, example, exchange, exhibition, exit, experience, expression, eye, eyesight, face, facility, fact, factory, fall, family, farewell, farm, farmer, fate, father, fault, favor, feeling, feet, fellow, fence, festival, fever, fiction, field, fine arts, finger, fire, firework
名詞(Fi-Ge)【17】 fish, fitting room, flag, flame, flight, floor, flower, flute, folk, food, football, foreigner, forest, fossil fuel, fountain, fox, frame, France, French fries, fridge, friend, friendship, frog, front, fruit, fun, future, game, garbage, garden, gas, gate, gentleman
名詞(Ge-Ha)【18】 German, Germany, gesture, gift, girl, glass, global warming, goal, God, gold, goodness, goose, gorilla, government, grade, grandchild, grandfather, grandmother, grass, grassland, green, greenhouse gases, greeting, ground, group, guest, guide, guitar, gull, habit, habitat, hair, Halloween
名詞(Ha-Ho)【19】 hamburger, hand, handkerchief, handle, harm, harvest, hat, hay fever, head, headache, health, heart, heat, heritage, hero, highland, hill, hint, history, hobby, hole, holiday, home, home economics, homepage, homestay, homework, honey, honor, horizon, horse, hospital, host
名詞(Ho-Ju)【20】 hotel, hour, house, humor, hunger, husband, idea, impact, importance, impossible, impression, India, Indian, influence, information, ink, insect, inspiration, instrument, interest, internet, interview, island, jam, Japan, Japanese, jellyfish, job, journey, joy, juice, jungle, justice
名詞(Ke-Li)【21】 key, kilometer, kind, kindness, king, kingdom, kitchen, kite, knee, knife, knowledge, koala, Korea, lady, lake, land, landmine, language, lavatory, law, lawyer, leader, leaf, leaves, left, leg, lesson, letter, library, life, lives, light, line
名詞(Li-Me)【22】 lion, liquid, locker, London, loss, lot, lullaby, lunch, machine, magic, man, men, manner, mansion, map, market, mask, master, match, mathematics, math, matter, meal, meaning, measure, meat, medal, medicine, meeting, member, memorial, memory
名詞(Me-Mt)【23】 mess, message, meter, Mexico, midnight, mile, milk, minister, minute, mirror, Miss, mistake, model, mom, moment, money, monkey, monster, monument, moon, moral education, morning, mother, motto, mountain, mouse, mouth, movement, movie, Mr., Mrs., Ms., Mt.
名詞(Mu-Nu)【24】 museum, music, musical, musician, nail, name, nap, nation, nature, neck, needle, neighbor, neighborhood, nephew, nest, net, New York, New Zealand, news, newspaper, nickname, niece, night, Nobel Peace Prize, noise, noon, north, northeast, nose, notebook, notice, number, nun
名詞(Nu-Pa)【25】 nurse, obstacle, occupation, ocean, octopus, office, officer, oil, opera, operator, opinion, orange, orchestra, order, organ, outside, oxygen, ozone, page, pain, paint, painter, painting, pair, paper, pardon, parent, park, parking, part, partner, party, passport
名詞(Pe-Pl)【26】 PE, peace, peel, pen, pencil, people, period, permission, person, pet, pharmacist, phone, photo, photographer, phrase, piano, picnic, picture, piece, pig, pillar, pilot, pink, pity, place, plan, plane, planet, plant, plastic, plate, player, playground
名詞(Pl-Qu)【27】 pleasure, pocket, poem, poet, point, poison, police, pollution, pool, population, post, poster, pot, potato, power, present, presentation, pressure, price, priest, principal, priority, problem, program, project, promise, pumpkin, purple, purpose, pyramid, queen, question, quiz
名詞(Ra-Ri)【28】 rabbit, race, racket, radio, rain, rainbow, rainforest, ramp, rat, ray, reason, recess, recipe, rectangle, recycling, refugee, relationship, relay, report, reporter, reproach, research, resource, rest, restaurant, restroom, rhythm, rice, rice cake, rider, right, ring, risk
名詞(Ri-Sh)【29】 river, road, rock, rocket, roof, room, rose, rule, ruler, sadness, safety, sale, salesclerk, salmon, salt, sanctuary, sand, scene, school, science, scientist, scissors, sculpture, sea, season, seat, secondhand store, secret, section, seed, sentence, service, shade
名詞(Sh-So)【30】 shape, sheep, sheet, shelf, ship, shirt, shoes, shop, shopping, shot, shoulder, shrine, side, sightseeing, sign, silver, singer, sister, site, situation, size, skill, skin, sky, slave, slum, smoke, snow, soccer, socks, social studies, softball, soldier
名詞(So-St)【31】 solution, son, song, sound, soup, south, souvenir, space, spaceship, Spain, speaker, specialist, speech, spoon, sport, spring, square, stadium, stairs, stamp, stapler, star, starvation, station, statue, stay, step, stick, stomach, stomachache, stone, store, storm
名詞(St-Te)【32】 story, stranger, street, string, struggle, student, style, subject, suburb, subway, success, summer, sun, sunrise, sunset, surface, survey, sweater, sword, symbol, system, T-shirt, table, tag, tail, task, tea, teacher, teacup, team, tear, telephone, telescope
名詞(Te-To)【33】 television, temper, temperature, temple, tennis, test, textbook, Thanksgiving Day, theater, theme, thief, thing, thought, ticket, tiger, time, tissue, toast, today, toe, toilet, tomato, tomorrow, ton, tongue, tonight, tooth, teeth, toothache, top, tower, town, toy
名詞(Tr-Un)【34】 track, track and field, trade, tradition, traffic, tragedy, train, trap, trash, travel, tray, treasure, tree, triangle, trick, trip, trouble, truck, trust, truth, tube, turkey, turn, turtle, TV, U.K., umbrella, United Nations, uncle, unicycle, uniform, United States, unity
名詞(Un-We)【35】 universal design, university, use, vacation, value, variety, vegetable, vending machine, vet, victim, video, video game, view, village, violin, visit, visitor, voice, volcano, volleyball, volume, volunteer, vulture, waitress, wall, wallet, war, water, waterfall, way, weapon, weather, weather forecast
名詞(We-Zo)【36】 web, week, weekend, well, west, whale, wheel, wheelchair, wife, wind, windmill, window, wine, wing, winner, winter, wish, witch, wolf, woman, wood, word, work, worker, world, World Heritage Site, yacht, year, yellow, yen, yesterday, zebra, zoo
形容詞(順序を表す言葉)【37】 first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth, thirtieth, fortieth, fiftieth, sixtieth, seventieth, eightieth, ninetieth, hundredth, thousandth, millionth
形容詞(Ab-Ce)【38】 able, active, adult, afraid, all, American, ancient, angry, another, any, artificial, asleep, atomic, awesome, bad, ill, worse, worst, bare, basic, beautiful, big, black, blind, blue, bored, boring, born, both, breathtaking, bright, British, brown, busy, careful, centigrade, certain
形容詞(Ch-Dr)【39】 cheap, cheerful, chemical, Chinese, civil, clean, clever, close, cloudy, cold, colorful, comfortable, commercial, common, compulsory, conceited, confused, convenient, cool, correct, creative, crowded, cute, daily, dangerous, dark, dead, deaf, dear, deep, delicious, depressed, different, difficult, dirty, disabled, disappointed, dry
形容詞(Dy-Fr)【40】 dying, each, easy, economic, efficient, elderly, elegant, elementary, else, embarrassed, empty, equal, even, every, exact, excited, exciting, expensive, fair, faithful, famous, far, fast, favorite, few, fine, fit, fond, foolish, foreign, former, foster, free, fresh, friendly, frightened, frustrated
形容詞(Fu-La)【41】 full, funny, German, glad, global, good, well, better, best, great, greedy, half, happy, hard, healthy, heavy, high, honest, hot, huge, human, hungry, important, impossible, Indian, industrial, injured, integrated, intense, interested, interesting, international, itchy, Japanese, junior, kind, large
形容詞(La-No)【42】 last, late, light, little, less, least, living, long, loud, lucky, major, many, much, more, most, master, meaningful, medium, memorial, mighty, military, minor, miserable, modern, musical, narrow, national, natural, naughty, necessary, neither, nervous, new, next, nice, noble
形容詞(No-Re)【43】 noisy, northeast, northern, nuclear, official, old, only, open, opposite, optimistic, ordinary, original, other, outside, own, pale, paralyzed, particular, peaceful, perfect, plastic, pleasant, polite, political, poor, popular, positive, possible, present, pretty, proud, public, quiet, rainy, ready, real, red
形容詞(Re-St)【44】 regular, relaxed, responsible, rich, ridiculous, right, round, sacred, sad, safe, same, scary, selfish, senior, serious, several, short, shy, sick, silent, silly, similar, simple, sleepy, slow, small, smart, smooth, snowy, sociable, soft, some, sore, sorry, sour, special, stiff, straight
形容詞(St-Yo)【45】 strange, strong, stupid, such, sunny, sure, sweet, tall, terrible, thirsty, tired, tourist, traditional, true, unbelievable, unclean, underground, unequal, unhappy, useful, usual, vast, virtual, warm, weak, welcome, western, white, whole, wide, wild, willing, windy, wonderful, worth, wrong, young
動詞(Ac-Br)【46】 act, add, admire, advertise, agree, allow, amaze, answer, appear, arrest, arrive, ask, assist, attack, bark, bear, become, became, begin, began, begun, believe, belong, blame, blow, blew, boil, border, borrow, bother, break, broke, broken
動詞(Br-Co)【47】 bring, brought, broaden, brush, build, built, bump, burn, bury, buy, bought, call, campaign, care, carry, catch, caught, cause, celebrate, change, chew, choose, chose, clean, climb, close, collect, come, came, communicate, compare, complain, contact
動詞(Co-Ea)【48】 continue, control, cook, cost, cough, count, cover, create, cross, cry, decide, decorate, decrease, develop, die, disagree, disappear, discover, displace, display, do, does, did, done, draw, drew, dream, drink, drank, drunk, drive, drop, dump, earn
動詞(Ea-Fu)【49】 eat, ate, eaten, elect, enjoy, enter, excuse, expect, explain, explode, export, fail, fall, fell, fascinate, fasten, feel, felt, fight, fought, fill, find, found, finish, float, fly, flew, fold, follow, forget, forgot, forgive, fulfill
動詞(Ga-Hu)【50】 gather, get, got, give, gave, given, go, went, gone, graduate, grow, grew, guess, guide, handle, hang, happen, harm, hate, have, has, had, heal, hear, heard, help, hide, hit, hold, held, hope, hurry, hurt
動詞(Im-Le)【51】 imagine, increase, injure, inspire, insult, interest, introduce, invent, investigate, invite, join, judge, jump, keep, kill, knit, knock, know, knew, known, land, last, laugh, launch, lay, laid, lead, led, learn, leave, lend, lent
動詞(Li-Pa)【52】 lie, lay, lain, lied, lift, like, listen, live, locate, look, lose, make, made, marry, master, mean, meant, meet, met, mind, miss, move, need, nod, offer, open, order, overcome, paint, park, participate, pass, pay, peel
動詞(Pi-Re)【53】 pick, plan, plant, play, please, poison, pollute, post, practice, prefer, prepare, present, print, produce, protect, provide, publish, pull, punish, push, put, rain, raise, reach, react, read, realize, rebuild, receive, recognize, recycle, reduce, refresh
動詞(Re-So)【54】 reject, relay, release, remain, remember, remind, remove, report, represent, reproach, rescue, research, respect, respond, return, reuse, ride, rode, ridden, rise, run, ran, run, save, say, said, scare, scold, search, see, saw, seen, seem, sell, sold
動詞(Se-St)【55】 send, sent, separate, sew, shake, sheet, shine, shoot, shop, shout, show, shut, sing, sang, sung, sit, sat, ski, sleep, smell, smile, smoke, snow, solve, sort, sound, speak, spoke, spoken, spell, spend, stand, start, starve, stay
動詞(St-Tr)【56】 sting, stop, strive, struggle, study, succeed, suffer, support, suppose, surf, surprise, surround, survive, swallow, swim, swam, swum, take, took, taken, talk, teach, taught, tease, tell, told, thank, think, throw, threw, thrown, touch, travel, treat
動詞(Tr-Ya)【57】 trust, try, turn, uncover, understand, understood, use, visit, wait, wake, woke, woken, walk, want, wash, waste, watch, weaken, wear, weigh, whisper, whistle, win, won, wish, wonder, work, worry, wrap, wrestle, write, wrote, written, yacht
副詞(A.-Fi)【58】 a.m., about, abroad, again, ago, almost, alone, aloud, already, also, always, anytime, anywhere, away, back, best, better, carefully, certainly, cheerfully, clearly, closely, definitely, downstairs, early, easily, either, else, enough, especially, even, ever, everywhere, fast, finally
副詞(Fl-Ra)【59】 fluently, forever, forward, happily, here, incredibly, instead, just, later, long, maybe, more, most, never, no, northeast, not, now, o’clock, off, often, OK, once, out, outside, over, p.m., perhaps, please, precisely, quickly, quietly, quite, rather
副詞(Re-Ye)【60】 ready, really, right, round, sadly, sincerely, slowly, so, someday, somehow, sometimes, soon, still, straight, strongly, suddenly, sure, then, there, tightly, together, tomorrow, tonight, too, truly, unfairly, up, usually, very, well, worst, yes, yesterday, yet