反义疑问句习题We must save the Earth.We must save the Earth,______,_______?

问题描述:

反义疑问句习题
We must save the Earth.
We must save the Earth,______,_______?

needn"t we

must we

这是老师讲的:
首先要在句子中判断need是情态动词还是实义动词(就是普通的词),如果是情态动词的话后面的词一定是原形,如果不是的话就请do does 帮忙。下面有几道题。
1 I need play the guitar,_______,________?
2 She need go to school ,_______,________?
3 I need to ride a bike,______,______?
4 The bike needs repairing,_______,_______?

答案:1 needn't I
2 needn't she
3don't I
4 doesn't it
望采纳

do we?

needn't we?
请记住:做这类题时may、must、need三个词依次使用(这是一个经验).例如此处前面用了must,后面就用need形式.