自考英语二课程
主语的基本知识
主语是执行句子的行为或动作的主体。
作主语的词：名词，代词，动名词，动词不定式等。
The pianist played a very beautiful song.
They forget to bring the homework.
Running is good for your health.
To keep a hobby is important for everyone.
测一测
用下面单词的正确形式填空
1. Tigers ( Tiger）are very fierce(凶猛的) animal.
2. Tiger（Tiger）is a kind of fierce animal.
3. She（her）is a social(社交的) person.
4. He likes/liked（like）social activities(活动).
5. Pubic speaking（speak）is a necessary(必要的) skill.
6. To take（take）regular exercise is a good habit(习惯).
02主语的其他重要知识
1.There be句型中主语（在这种句型中，主语在be动词之后）
There are a lot of banana trees on the island.
= A lot of banana trees are on the island.
There is a great Italian restaurant in the corner.
= A great Italian restaurant is in the corner.
2.祈使句中一般省略主语
（祈使句是英语中的一个句式，用于表达命令、请求、警告、禁止等）
(You) Go to the kitchen(厨房) and get a glass of water for me.
(You) Keep doing it until I tell you to stop.
(Students) Clean the classroom and blackboard.
3.主语-谓语的人称和数一致原则
（表语和宾语不决定谓语的形式）
I love my cat. / My cat loves me. / My cat and I love each other.
My favorite(最喜欢的) fruit is kiwis(猕猴桃).
= Kiwis are my favorite fruit.
4.形式主语
形式主语通常用it，用来替代真正的主语
it 并无实际语义，只是为满足语法需要，避免句子头重脚轻。
It is easier to lose friends than to make friends.
= To lose friends is easier than to make friends.
It is important having a career plan before graduation(毕业).
= Having a career plan before graduation is important.
