Question

用括号中所给单词的适当形式填空

You'd better _______ some medicine ,or you'll fell bad.(take)
Don't forget ________ amessage to me next time.(leave)
We crowed round the place to see what ________(happen)
They _________--the map of the country brfore they left.(study)
麻烦还说一下为什么？

Answer 1

You'd better _take______ some medicine ,or you'll fell bad.(take)(had better 后接动词原形）
Don't forget _to leave_______ a message to me next time.(leave)（这句意思是：你下次不要忘了要给我留一个口信。forget 后的动词有二种接法，一种是接to+原形，一种是接动名词，也就是V-ing形式，动作还没发生接不定式，也就是to +原形）
We crowed round the place to see what __had hppened______(happen)（译：我们在那地方挤成一圈支看发生了什么事。事发生在前，挤在那发生在后，前者动作用过去完成时，后者用一般过去时）
They ___had studied______--the map of the country brfore they left.(study)（译：在他们离开前，他们研究过那个国家的地图。研究发生在前，离开发生在后，道理同上一句。）

Answer 2

You'd better _take______ some medicine ,or you'll fell bad.(take) (had better do sth)
Don't forget __to leave______ amessage to me next time.(leave) (forget to sth 忘记去做某事 forget doing sth 忘记做过某事)
We crowed round the place to see what _happened_______(happen) （根据句意用一般过去时）
They _studied________--the map of the country brfore they left.(study) （before引导的时间状语从句，从句用一般过去时，主句也用一般过去时）