高中英语语法总结：表语从句

如：The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。

The question is how he did it. 问题是他是如何做此事的。

That was what she did this morning on reaching the attic. 那就是她今晨上了阁楼干的。

解释：

1. 连词because可引导表语从句。如：

I think it is because you are doing too much. 我想这是因为你做得太多。

2. 在一些表示 建议、劝说、命令 的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如：

My suggestion is that we (should) start early tomorrow. 我的建议是我们明天一早就出发。