时间状语从句:
1.我们正在游泳,就在这时开始下雨了 。
We were swimming when it started to rain.
这里为什么用when,而不用while?
这里考察:be doing when的句式结构,表示“正在做某事,突然....”
2.我觉得他能来是好事 。
I think that he can come a good thing .
宾语 that he can come太长,一般会用it来代替 变成:
I think it a good thing that he can come.
主谓宾宾补,it 是形式宾语,真正的宾语为that引导的宾语从句。
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