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如何正确使用虚拟语气倒装形式?
请看典型考题:
__________ your address,I would have written to you.
A. Did I know B. Were I to know
C. Had I known D. If I should know
此题应选 C。这是虚拟语气的倒装形式。当虚拟条件句中含有 were,had,should,could等动词时,可以将if省略,然后将 were,had,should,could 等词移至句首:
1. If he should fail,he would kill himself.
→Should he fail,he would kill himself.
万一失败,他就会自杀。
2. If I were you,I would do it at once.
→Were I you,I would do it at once.
假若我是你,我就会马上做。
3. If I could do it,I would.
→Could I do it,I would.
要是我能做此事,我一定会做。
4. If he had seen you yesterday,he would haveasked you about it.
→Had he seen you yesterday,he would haveasked you about it.
他昨天要是看到了你,他就会问你这事了。
顺便说一句,以上移至句首的 had不一定是助动词,如果是实义动词也可倒装:
If he had money,he would buy a car.
→Had he money,he would buy a car.
他要是有钱,他就会买一辆小车。
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