打印本文 
關(guān)閉窗口 涉及狀語從句的幾種特定時(shí)態(tài)
1. “主將從現(xiàn)”原則
即若主句為一般將來時(shí)，時(shí)間和條件狀語從句通常要用一般現(xiàn)在時(shí)表示將來，而不能直接使用將來時(shí)態(tài)。如：
I’ll give her the telex when she comes. 她來時(shí)把電傳交給她。
I’ll return the book as soon as I have read it. 這書一看完我就送還。
He’ll have four years at university after he leaves school. 他中學(xué)畢業(yè)后要上四年大學(xué)。
2. since與完成時(shí)
since 引導(dǎo)時(shí)間狀語從句時(shí)，其主句通常要用現(xiàn)在完成時(shí)，有時(shí)也用現(xiàn)在完成進(jìn)行時(shí)。如：
She has had another baby since I saw her last. 從上次我見到她以來，她又生了一個(gè)孩子。
He has grown an inch since I saw him. 我上次見到他以后他已長(zhǎng)高了一英寸。
注：當(dāng)主句為“It + be + 一段時(shí)間”時(shí)，則通常用一般現(xiàn)在時(shí)代替現(xiàn)在完成時(shí)。如：
It’s more than three years now since I saw her last. 我們已有三年多沒見面了。
3. 特定句式的時(shí)態(tài)
由no sooner. . . than, hardly [scarcely]…when引出的時(shí)間狀語從句，其主句通常用過去完成時(shí)，從句通常用一般過去時(shí)。如：
Hardly had he arrived when she started complaining. 他剛到她就抱怨起來。
No sooner had he gone to sleep than the telephone rang. 他剛睡著電話鈴就響了。
We had no sooner set out than a thunderstorm broke. 我們剛出發(fā)就下起一陣?yán)妆?/SPAN>
No sooner had she agreed to marry him than she started to have terrible doubts. 她剛同意嫁給他她就開始產(chǎn)生可怕的疑慮。
打印本文 關(guān)閉窗口