男生 說(shuō)晚安代表什么含義
2023-04-24
更新時(shí)間:2023-04-23 04:26:52作者:佚名
1、名詞A)、名詞的數(shù)我們知道名詞可以分為可數(shù)名詞和不可數(shù)名詞,而不可數(shù)名詞它沒(méi)有復(fù)數(shù)形式,但可數(shù)名詞卻有單數(shù)和復(fù)數(shù)之分,復(fù)數(shù)的構(gòu)成如下:一)在后面加s。如:fathers, books, Americans, Germans, apples, bananas二)x, sh, ch, s, tch后加es。如:boxes, glasses, dresses, watches, wishes, faxes三)1)以輔音字母加y結(jié)尾的變y為i再加es 如:baby-babies, family-families, duty-duties, comedy-comedies, documentary-documentaries, story-stories2)以元音字母加y結(jié)尾的直接加s。如:day-days, boy-boys, toy-toys, key-keys, ways四)以o結(jié)尾加s(外來(lái)詞)。如:radios, photos, 但如是輔音加o的加es:如: tomatoes西紅柿, potatoes馬鈴薯五)以f或fe結(jié)尾的變f為v再加es(s)。如:knife-knives, wife-wives, half-halves, shelf-shelves, leaf-leaves, yourself-yourselves六)單復(fù)數(shù)相同(不變的)有:fish, sheep, deer鹿子, Chinese, Japanese七)一般只有復(fù)數(shù),沒(méi)有單數(shù)的有:people,pants, shorts, shoes, glasses, gloves, clothes, socks八)單詞形式不變,既可以是單數(shù)也可以是復(fù)數(shù)的有:police警察局,警察, class班,同學(xué), family家,家庭成員九)合成的復(fù)數(shù)一般只加主要名詞,多數(shù)為后一個(gè)單詞。如:action movie-action movies, pen pal-pen pals; 但如果是由man或woman所組成的合成詞的復(fù)數(shù)則同時(shí)為復(fù)數(shù)。如:man doctor-men doctors, woman teacher-women teachers十)有的單復(fù)數(shù)意思不同。如:fish魚(yú) fishes魚(yú)的種類, paper紙 papers報(bào)紙,卷子,論文, work工作 works作品,工廠, glass玻璃 glasses玻璃杯,眼鏡, orange桔子水 oranges橙子, light光線 lights燈, people人 peoples民族, time時(shí)間 times時(shí)代, 次數(shù), chicken 雞肉 chickens 小雞十一) 單個(gè)字母的復(fù)數(shù)可以有兩種形式直接加s或’s。如:Is (I’s), Ks (K’s)。但如是縮略詞則只加s。如:IDs, VCDs, SARs十二) 特殊形式的有:child-children, man-men, woman-women, foot-feet, mouse-mice, policeman-policemen, Englishman-EnglishmenB)名詞的格當(dāng)我們要表示某人的什么東西或人時(shí),我們就要使用所有格形式。構(gòu)成如下:一)單數(shù)在后面加’s。如:brother’s, Mike’s, teacher’s二)復(fù)數(shù)以s結(jié)尾的直接在s后加’,如果不是以s結(jié)尾的與單數(shù)一樣處理。如:Teachers’ Day教師節(jié), classmates’; Children’s Day六一節(jié), Women’s Day三八節(jié)三)由and并列的名詞所有時(shí),如果是共同所有同一人或物時(shí),只加最后一個(gè)’s,但分別擁有時(shí)卻分別按單數(shù)形式處理。如:Mike and Ben’s room邁克和本的房間(共住一間),Mike’s and Ben’s rooms邁克和本的房間(各自的房間)。
2、代詞項(xiàng)目 人稱代詞 物主代詞 指示代詞 反身代詞人稱 主格 賓格 形容詞 名詞性第一人稱 單數(shù) I me my mine myself復(fù)數(shù) we us our ours ourselves第二人稱 單數(shù) you you your yours yourself復(fù)數(shù) you you your yours yourselves第三人稱 單數(shù) she her her hers herselfhe him his his himselfit it its its this that itself復(fù)數(shù) they them their theirs these those themselves。
3、動(dòng)詞A) 第三人稱單數(shù)當(dāng)動(dòng)詞是第三人稱單數(shù)時(shí),動(dòng)詞應(yīng)該像名詞的單數(shù)變動(dòng)詞那樣加s,如下:一)一般在詞后加s。如:comes, spells, waits, talks, sees, dances, trains二)在x, sh, ch, s, tch后加es。如:watches, washes, wishes, finishes三)1)以輔音字母加y結(jié)尾的變y為i再加es。如:study-studies, hurry-hurries, try-tries2)以元音字母加y結(jié)尾的直接加s。如:plays, says, stays, enjoys, buys四)以o結(jié)尾加es。如:does, goes五)特殊的有:are-is, have-hasB) 現(xiàn)在分詞當(dāng)我們說(shuō)某人正在做什么事時(shí),動(dòng)詞要使用分詞形式,不能用原形,構(gòu)成如下:一)一般在后加ing。如:spell-spelling, sing-singing, see-seeing, train-training, play-playing, hurry-hurrying, watch-watching, go-going, do-doing。