国产精品麻豆欧美日韩ww_欧美日高清视频_亚洲精品成人久久久_久久精品国产清自在天天线

英語(yǔ)時(shí)間狀語(yǔ)從句用法歸納

1. 引導(dǎo)時(shí)間狀語(yǔ)從句的從屬連詞很多，常見(jiàn)的有before, after, when, while, as, since, till, until, as soon as 等。

2. 表示“當(dāng)…時(shí)候”的 while, when, as 的用法區(qū)別是：while從句中的謂語(yǔ)動(dòng)詞必須是延續(xù)性動(dòng)詞；表示帶有規(guī)律性的“每當(dāng)”或當(dāng)主、從句謂語(yǔ)動(dòng)詞的動(dòng)作發(fā)生有先后時(shí)，只能用 when；當(dāng)表示“一邊…一邊…”或“隨著”時(shí)，只能用 as。另外，用于此義的 as 所引導(dǎo)的時(shí)間狀語(yǔ)從句謂語(yǔ)只能是動(dòng)作動(dòng)詞，不能是狀態(tài)動(dòng)詞。如下面一道高考題的答案是 B 而不能是A：

“I’m going to the post office.” “________ you’re there, can you get me some stamps?”

A. As                       B. While                   C. Because                D. If

3. until 在肯定句中通常只連用延續(xù)性動(dòng)詞，表示相應(yīng)動(dòng)作結(jié)束的時(shí)間；在否定句中通常連用非延續(xù)性動(dòng)詞，表示相應(yīng)動(dòng)作開(kāi)始的時(shí)間，意為“直到…才”。如：

If you must go, at least wait till the rain stops. 如果你堅(jiān)持要走, 至少也要等雨停了再走。

The letter passed from one to another until everyone had read it. 那封信逐一傳閱，直到每個(gè)人都看過(guò)為止。

4. 表示“一…就”除用 as soon as 外，還可用 the minute, the second, the instant, immediately, directly, instantly, no sooner…than, hardly…when 等。如：

I came immediately you called. 你一來(lái)電話(huà)我就來(lái)了。

Hardly had I opened the door when he told me. 我剛開(kāi)開(kāi)門(mén)，他就告訴了我。

The moment I have finished I'll give you a call. 我一干完就給你打電話(huà)。

5. every time, each time, (the) next time, (the) last time, by the time, the first time, any time 等以 time 結(jié)尾的詞語(yǔ)也可用作連詞，引導(dǎo)時(shí)間狀語(yǔ)從句。如：

Last time I saw him, he looked ill. 上次我見(jiàn)到他時(shí)，他好像有病。

Every time I call on him, he is out. 我每次去訪問(wèn)他，他都不在。

You can call me any time you want to. 你隨時(shí)都可以給我打電話(huà)。

Next time you’re in London come and visit us. 你下次來(lái)倫敦過(guò)來(lái)探望我們。

注：其中的every time, each time, any time前不用冠詞，(the) next time, (the) last time中的冠詞可以省略，而the first time中的冠詞通常不能省略。