| 1. | He was seen to come here this morning
今天早晨有人看见他来这里了。作主语补语。 |
| 2. | English is not difficult for us to learn
英语对我们来说不难学。 （不定式作主语。 ） |
| 3. | It is not difficult for us to learn english
对我们来说学英语不难。 （不定式作主语。 ） |
| 4. | A lot ( = much ) has been done about the thing
（作主语）关于这件事已经采取了许多措施。 |
| 5. | When and where to build the new factory is not decided yet
用引号的词语作主语时，谓语用单数第三人称。 |
| 6. | It ' s a question that ( which ) needs careful consideration
这是一个需要仔细考虑的问题。 （指物，作主语。 ） |
| 7. | Who is the man that is reading a magazine under the tree
树下那个在看杂志的那个人是谁？ （指人，作主语。 ） |
| 8. | Generally a noun can serve as subject , object and attributive in a sentence
名词一般都可以在句子里作主语、宾语和定语。 |
| 9. | From our points of view a prepositional phrase can act as a subject to some extent
我们认为介宾短语在一定条件下可以作主语。 |
| 10. | I spend about half an hour ( in ) reading english every morning
样，可表示花费钱财及时间，但需要用表示人物的名词或代词作主语。 |
