Unit 5 Canada ---“The True North”教案
ary will be back soon?
Ex 4 Complete the following sentences
_______________________ is quite good.
__________________________________ is known to everyone.
____________________ is true.
_______________________________ soon spread all over this area.
Step 4 difference
同位语从句前面的名词只能是idea, fact, news, hope, belief, suggestion, proposal, word, thought, doubt, truth, possibility, promise, order等有一定内涵的名词，而定语从句的先行词可以是名词,代词,主句的一部分或是整个主句。
He told me the news that he would come home from aboard soon.
Word came that he had been abroad.
Our team has won the game, which made us very happy.
定语从句是从句对其先行词的修饰或限制,属于形容词性从句的范畴;而同位语从句是从句对前面抽象名词的进一步的说明和解释,属于名词性从句的范畴，如: The news that our team has won the game was true. 我们队赢了那场比赛的消息是真的。
The news that he told me yesterday was true.
有些引导词如how, whether, what 可以引导同位语从句, 但不能引导定语从句。如: That question whether we need it has not been considered.
引导词that引导定语从句时, 在从句中一般作主语或宾语 (指物时还可以用which代替), 并且作宾语时常常省略，that在同位语从句中仅起连接作用, 不充当任何成分, 并且不能省略, 也不能用which来代替，如:
The order that we should send a few people to help the other groups was received yesterday.
(同位语从句, 是对order的具体解释, that虽不作成分, 但不能省略)
The order that we received yesterday was that we should send a few people to help the other groups.
(定语从句, 是名词order的修饰语, that在从句中作received的宾语, 可以省略)
1.The news that there are no lives on the moon is known to us all.( )
2.The news that you heard is not true. ( )
3.Have you any idea who he went with? ( )
4.Is there any hope that they will be home in time? ( )
5.The problem that you referred to doesn’t exist at all. ( )