1,Notonlydoesthesungiveuslightbutalsoitgivesusheat.2,NotonlydidhespeakEnglishcorrectly,butalsohespeaksitfluently.3,Notonlyisthisyoungmancleverbutalsoheishardworking.为什么有时候用does,有时候用did,有时

Question

1,Not only does the sun give us light but also it gives us heat.
2,Not only did he speak English correctly,but also he speaks it fluently.
3,Not only is this young man clever but also he is hardworking.
为什么有时候用does,有时候用did,有时候用is呢?该怎么区分呢?

Answer 1

以上的句子都是倒装句,换成正常语序就是
1.The sun not only gives us light but also it gives us heat.
2.He speaks not only English correctly but also he speaks it fluently
3.This young man is not only clever but also he is hardworking.
观察以上三句的谓语动词,
前两句是 give 和 speak 是实义动词,所以变倒装句时添加助动词do,does或者did
最后一句 是 is 变倒装句时,直接提前就可以了
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