2015年職稱英語考試衛(wèi)生類語法之名詞性從句：

1.How some mammals came to live in the sea is not know.(主語從句)

2.The attorney told his client that they had little chance of winning the case.(賓語從句)

3.The problem is what we'll do next.(表語從句)

4.We have no idea that he has come back.(同位語從句)

同位語(Appositive)：

同位語是英語語法的重點(diǎn)內(nèi)容，也是各類考試中的一個考點(diǎn)，同時，在寫作中正確運(yùn)用同位語可以使你的句型更加簡潔得體。

例：When reports came into London zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously.

(當(dāng)倫敦動物園接到報告說，在倫敦以南45英里處發(fā)現(xiàn)一只美洲獅時，這些報告并沒有受到重視。)

在這里，a wild puma had been spotted forty-five miles south of London就是同位語從句，它本來應(yīng)該放在“reports”后面，這里卻被放在了謂語成分came into London zoo的后面，目的是讓句型顯得更為穩(wěn)重。