这些岗位中，三分之二是向大学应届毕业生开放的。(数词作主语)

　　The young should respect the old.

　　年轻人应该尊重老年人。("the＋形容词"表示一类人作主语)

　　To decide is to act.

　　决定即行动。(动词不定式作主语)

　　Being able to participate in the contest is my honour.

　　能参加比赛是我的荣幸。(动名词作主语)

　　What you said has shaken me up.

　　你说的话令我十分震惊。(从句作主语)

　　It is still a question when we shall have our sports meeting.

　　我们将什么时候举行运动会还是一个问题。(句中it为形式主语，when引导的名词性从句作真正的主语)

　　There is nothing to get excited about.

　　没有什么值得激动的。(there be句型中，主语通常放在be之后。)

　　集中演练1

　　画出下面句子中的主语

　　①It takes us hours to do our homework every day.

　　答案：It takes us hours_to_do_our_homework every day.

　　②One must admire him for his willingness.

　　答案：One_must admire him for his willingness.

　　③"How do you do？" is a greeting.

　　答案："How_do_you_do？" is a greeting.

　　④There is a chemical works over there.

　　答案：There is_a_chemical_works_over there.

　　⑤Five minutes is enough for us to finish the task.

　　答案：Five_minutes is enough for us to finish the task.

　　⑥Learning how to raise the sails, of course, is an important part of a sailor's training.

　　答案：Learning_how_to_raise_the_sails,_of course, is an important part of a sailor's training.

语法点二 动　词 　　　　动词是表示动作、状态或性质等的词。根据词义及在句中的作用可分为实义动词(或称行为动词)、系动词、助动词和情态动词四大类。

　　1. 动词的分类

(1)按句法功能分