discover“it”(編輯修改稿)
2025-08-11 18:24 本頁面
【文章內(nèi)容簡介】 children should go to bed. = It is time that children went to bed. 常見句型 1. It is the first ( second ... ) time that ... 該句型要和上一個(gè)句型區(qū)別開來，該句型中的 that 從句不用虛擬詫氣，而用完成時(shí)態(tài)。如果主句是一般現(xiàn)在時(shí)，后面從句用現(xiàn)在完成時(shí)態(tài)；如果是一般過去時(shí)，后面從句則用過去完成時(shí)態(tài)，該結(jié)構(gòu)中 that 可以省去； it有時(shí)用 this 替換．常譯為“這是某人第．． .次做某事＂ It is the first time I have been here. = This is the first time I have been here. 2. It is up to sb. to do sth … 應(yīng)由某人做某事。 It is up to you to decide whether we start or not. “ It be + n +主語從句”的特殊句式結(jié)構(gòu) 3. It is + 一段時(shí)間 + since ...。 since 引導(dǎo)的從句通常是一般過去時(shí)態(tài)，而且是瞬間動(dòng)詞。如果主句是一般過去時(shí)，從句則用過去完成時(shí)。 “ It be + n +主語從句”的特殊句式結(jié)構(gòu) It is 5 years since his father died. 他的父親已經(jīng)死了五年了 It is five months since I arrived in New York. 我到紐約已經(jīng)五個(gè)月了。 It is five months since I was in New York. 我離開紐約已經(jīng)五個(gè)月了。 （注意：終止性動(dòng)詞表示從動(dòng)作發(fā)生時(shí)算起；如果是狀態(tài)動(dòng)詞或持續(xù)性動(dòng)詞，則從動(dòng)作或狀態(tài)結(jié)束時(shí)算起。） 4. It is + 時(shí)間點(diǎn) + when ...。 該句型中的 when 引導(dǎo)的是一個(gè)時(shí)間狀詫從句，主句中的 it 指時(shí)間 點(diǎn) ，表詫由具體的時(shí)間充當(dāng)，常譯為＂當(dāng)．．．的時(shí)候，是．．．＂ It was 5 o’ clock when he came here. 5. It was\ will be + 一段時(shí)間 + before +從句 該句型主句中的 it 指時(shí)間 段 ，主句中的時(shí)態(tài)常是一般將來時(shí)戒一般過去時(shí)，主句中的表詫多是 long， 3 days， 2 weeks等表示時(shí)間段的詞戒短詫 It was 3 days before he went to Beijing. It will not be long before he finishes his job. “ It be + n +主語從句”的特殊句式結(jié)構(gòu) It will be several years before we meet again. 我們 要過 好幾年 才 能再見面。 It will not be long before they set out for the front. 用不了 多久他們 就 會(huì)出發(fā)去前線。 It will be + 時(shí)間段 + before + 從句 “要過 … 才 …” It will not be + 時(shí)間段 + before + 從句 “用不了 … 就…” It was two hours before the fireman arrived here. It was not five minutes before the fireman arrived here. 兩個(gè)小時(shí) 之后 消防員 才 到 . 沒過 五分鐘消防員 就 到了 . It was + 時(shí)間段 + before… “ … 之后才 … ” It was not + 時(shí)間段 + before… “沒過 … 就” ’s years ___ (since, before, after, that) I painted this beautiful picture. will be years ___ (since, before, after, that) I paint this beautiful picture. was years ___ (since, before, after, that) I painted this beautiful picture. 表示從 since從句謂語動(dòng)作發(fā)生以后到現(xiàn)在所經(jīng)過的一段時(shí)間，譯為“自從 ...以來已多久了” It is +時(shí)間段 +since(過去時(shí) )... It + will be +時(shí)間段 +before(一般現(xiàn)在時(shí) )… 表示從現(xiàn)在起到 before從句謂語動(dòng)作發(fā)生所經(jīng)過的一段時(shí)間 ,譯為 “ 多長時(shí)間后才會(huì) /就會(huì)做 …” It + was + 時(shí)間段
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