來源:網(wǎng)絡(luò)資源 2022-11-17 18:40:38
(一)掌握時間和條件狀語從句中的時態(tài)與主句時態(tài)的搭配
(1)時間狀語從句:
引導時間狀語從句的從屬連詞有when(當……時候),while(當,在……過程中),since(自從……以來),before(在……之前),after(在……之后),tell/until(直到……時),as soon as(一……就)。如果主句為一般將來時,則時間狀語從句只能用一般現(xiàn)在時表示將來的意義。
He was reading the newspaper when I came in.當我進來時,他正在讀報紙。
Keep an eye on my cat while I am away.我不在時,請照看一下我的貓。
Don’t talk so loud while others are studying.別人學習時不要大聲說話。
It has been five years since she went abroad.她出國已有五年了。
He died before his son came back.他在他兒子回來之前就去世了。
I’ll show him around our factory as soon as he arrives.他一到達我就領(lǐng)他參觀我們的工廠。
I’ll tell him about it as soon as I see him. 我一見到他就告訴他。
(2)條件狀語從句:
引導條件狀語從句的從屬連詞是if(如果)。如果主句是一般將來時,條件狀語從句只能用一般現(xiàn)在時。
If you stay at home, I’ll go.如果你呆在家里,我就走。
If we don’t get up early, we won’t catch the train.如果我們不早起,我們就趕不上火車。
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