The question is whether that man will turn up in time.

　　问题是那个人是否会及时出现。

　　3.其他连词as if,because,as,as though引导的表语从句

　　because引导表语从句通常只用于"This/That/It is/was because..."结构中。as if/as though引导的表语从句常置于系动词look，seem，sound，be，become等后面，常用虚拟语气，表示不存在的动作或状态。如：

　　The elephant feels as if/though he were a wall.

　　大象摸起来像一堵墙。

　　4.主语是表示建议、命令、要求等的名词，那么表语从句应该用虚拟语气，即should后接动词原形,(should可以省略)。如：

　　His suggestion is that we (should) climb all the way to the top of the hill. 他的建议是我们应该一路爬到山顶。

宾语从句和表语从句典型用法正误辨析

 1.我们不知道下一步该怎么做。

　　错误：We wonder how we shall do next.

　　正确：We wonder what we shall do next.

　　辨析：what，how都可以引导宾语从句，how在从句中充当状语，而what在从句中充当主语、宾语或表语。

　　2.请你告诉我他们在哪里野餐？

　　错误：Could you tell me where are they having a picnic?

　　正确：Could you tell me where they are having a picnic?

　　辨析：不管主句是陈述句是疑问句，宾语从句都应该用陈述语序。

　　3.我们相信他们已经提前完成他们的任务了，是吗？

　　错误：We believe that they have finished their task ahead of time,don't we? 正确：We believe that they have finished their task ahead of time,haven't they? 辨析：以think，believe，consider，suppose等动词加that引导的宾语从句，如果主句的主语是第一人称I/we,反意疑问句应根据从句来提问；如果主语是第二或第三人称的话，则反意疑问句应根据主句来提问。

　　4.现在我们面临的问题是我们城市的废物该如何处理。

　　错误：The problem we are facing is that the waste in our city should be dealt with.

　　正确：The problem we are facing is how the waste in our city should be dealt with. 辨析:表语从句可以用that引导，也可以用连接代词what，who，whom，which，whose等以及连接副词how，where，when，why来引导。根据句意，此句用how来引导，并作deal with的状语。

5.李先生看起来好像十分精通维修电脑。

错误：Mr Li seems that he is very expert at repairing computers.

　　正确：Mr Li seems as if he is very expert at repairing computers.

　　辨析：seem/look所需接的表语从句应该用as if/although引导，也可用it seems that句式，但是that所引导的是主语从句。如：

　　The bridge looks as if it will be broken soon.

　　It seems that they have been to the United States before.

　　6.对不起我不知道你也想参加那个竞赛。

错误：I'm sorry that I don't know you want to take part in that competition. 正确：I'm