2023年中考常考知識點之狀語從句

此處所說的狀語從句用法僅包括條件(if和unless引導)狀語從句和時間(when等引導,見下文)狀語從句。狀語從句需注意以下問題：

01

1.主句若是一般將來時、祈使句或含不表過去的情態動詞等，則if(如果), unless(除非)，when(當…的時候), as soon as(一…就…)，before, after, until, till, as(當…的時候)所引導的狀語從句用一般現在時。

You may take a rest when you finish doing your work. (主句有情態動詞)

Could you look after my son after I leave home?

(情態動詞could是為了讓語氣委婉，并不指過去時，從句仍用一般現在時)

I will go out as soon as it stops raining this afternoon. (主句是將來時)

Wait for your brother at the bus station until he arrives. (主句是祈使句)

02

2.而主句若是一般過去時，從句也要用表過去時的適當時態，如：

I would give the money to the charity if I had a million dollars.

When he got to the park, his classmates had left.

My son ran towards me as soon as he saw me on the street.

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