英语的连词的问题有几道题大家看下词语before,eventhough,for,since,because,when,though1hedidn'theartheknockatthedoor(when)hewaslisteningtotheradio.这道题选when为什么是错的呢?不是说他正在听音乐的时

Question

英语的连词的问题有几道题大家看下
词语before,even though,for,since,because,when,though
1 he didn't hear the knock at the door ( when )he was listening to the radio.
这道题选when为什么是错的呢?不是说他正在听音乐的时候,他不能听见有人在敲门.
2（since ）he is rich,he is not very happy.为什么since不能用啊,自从他有钱了,他很烦恼.为什么答案是though
3(even though ) he said so,you need not believe him.
4 Think again ( for)you do something为什么这道题目填for不行呢 不是 说再一次的感谢因为你做了这么多的事情.

Answer 1

1应当填while因为后面是 was listening
2若填since时态有误
3even though 是“既然”的意思
4for 后直接跟sth.或doing sth.