直流电动机结构:关于几条英语题目

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1.改错: our teacher often tells us we shouldn't buy anything we needn't.
A: tells B: shouldn't C: anything D: needn't
2.It's a long history, but you can hardly find new words in it.
Good. ____ it will be too hard for children.
A: so B: And C: But D: Or

d need在这里为动词 应该前借do构成否定 如直接加not则为情态动词,后应加动词
d 翻译为“不然的话对于孩子们来说就太难了”如果选c则应改为:but it still be too hard for children 看出区别了么,这句话翻译为 但它对孩子们来说仍太难

d,
needn't不能缩写
c
表转折