很多人对于电脑能够识别人的声音的想法感到非常吃惊。

　　There is no doubt that the prices of cars will go down.

　　毫无疑问汽车的价格会下降。

　　2)由连接代词和连接副词引导的同位语从句。此时的引导词在从句中作相应的成分。如：

　　They usually write exact instructions how the music is to be played.(how在从句中作状语)

　　他们通常还要为如何演奏音乐而写出精确的说明。

　　The question who should go abroad required consideration.(who在从句中作主语)

　　谁会出国这个问题还需要考虑。

　　考点二：学习同位语从句应该注意的几点

　　1)表达"是否"的概念时，要用whether而不用if引导同位语从句。

　　I have no idea whether you are interested in working for her.(此处不用if)

　　我不知道你是否有兴趣为她工作。

　　2)作主语的同位语从句有时会被谓语动词将其与名词分开，这叫间隔式同位语从句。

　　A saying goes that practice makes perfect.

　　熟能生巧是一句谚语。

　　考点三：如何区别定语从句和同位语从句

　　定语从句和同位语从句都可以由名词加从句构成，但是定语从句相当于形容词，它对先行词起修饰、限制的作用；而同位语从句相当于一个名词，它是对前面名词的内容的具体表述，二者是同位关系。此外，that引导同位语从句时，在从句中不作成分，而引导定语从句时，that在从句中作主语或宾语等成分。如：

　　The fact that there are no lives on the moon is known to us all.

　　月球上没有生命这个事实我们大家都知道。(同位语从句，that在从句中不作成分)

　　The news that you heard is not true.

　　你所听到的消息不真实。(定语从句，that在从句中作宾语)

　　The news that she won the first prize in the English speech contest was really exciting.

　　她在英语演讲比赛中获得冠军的消息真令人激动。(同位语从句，that在从句中不作成分)

　　用适当的连接词填空

　　1)The problem ______he can't come to help us worries us a lot.

　　2)I have no idea ______ he will return.

　　3)I have no information ______he went camping last Sunday.

　　4)He expressed the opinion ______ Tom should be made manager of the factory.

　　5)The problem is ______they have run out of food.

　　6)There's no doubt ______he was killed in the accident.

　　7)There's great doubt______ he did so or not.

　　8)He told me the news ______ his house had just been burned down.

　　9)He told me the news of ______ house had just been burned down.

　　10)Word came ______ the President of the USA would inspect the army.

　　单项填空

　　11)(2011·天津卷)Modern science has given clear evidence ______ smoking can lead to many diseases.

A．what　 　 B．which　　 C．that　 　 D．where