问题就是我身上没有钱。

　　The question is whether we can raise the funds we need.

　　问题是我们能否募集到需要的资金。

　　(2)连接代词who, whom, what, which, whoever, whatever, whichever；连接副词where, when, how, why。

　　The problem is who we can turn to for help when we got into trouble.

　　问题是当我们陷入麻烦时求助谁。

　　This is where I don't agree with you.

　　这就是我不同意你的地方。

　　(3)连词because

　　because引导表语从句时强调原因，why引导表语从句时强调结果。

　　She often comes late. That's because she has a baby to take care of.

　　她经常迟到。那是因为她有一个孩子要照顾。

　　She has a baby to take care of. That's why she often comes late.

　　她有一个孩子要照顾。那就是她经常迟到的原因。

　　(4)连词as if, as though

　　Twenty years has past, but it's as though/if it were only yesterday.

　　二十年过去了，但事情宛如昨天一样。

　　2．表语从句注意事项

　　(1)名词reason作主语时，后面的表语从句表示原因时要用that引导，而不用because。

　　The reason why he was late is that it was raining hard.

　　他来晚了是因为天正下大雨。

　　(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，即：should＋动词原形，should可省略。

　　My suggestion is that we (should) start early tomorrow.

　　我的建议是明天早点出发。

　　(3)as if/though引导的表语从句常用虚拟语气。用一般过去时表示现在，过去进行时表示现在进行，过去完成时表示过去，"could/would/might＋动词原形"表示将来。

　　The elephant feels as if/though it were a wall.

大象摸起来像一堵墙。