4. enough 足够　

　形容词＋enough 如：beautiful enough　足够漂亮

enough＋名词　如：enough food 足够食物

enough to 　足够...去做...　

如：I have enough money to go to Beijing. 我有足够的钱去北京。

5. stop doing sth. 停止做某事　Please stop speaking.请停止说话。

　　stop to do sth. 停止下来去做其他事　Please stop to speak. 请停下来去说话。

6. 看起来好像...sb. seem to do sth. = it seems that +从句

He seems to feel very sad.=It seems that he feels very sad. 他看起来好像很伤心。

7. 系动词不能独立作谓语，要和表语一起构成谓语。常用的连系动词有：look, feel, be, become, get, turn, smell, taste, stay(保持), kept等。连系动词除be 和become 等少数词可接名词作表语外，一般都是接形容词。　如：

　　They are very happy. He became a doctor (n.)two years ago. She felt very tired.

8. 倒装句:

由so＋助动词(be/do/will/have)/情态动词＋主语　意为：...也是一样

　　She is a student. So am I.　她是一个学生，我也是。

She went to school just now. So did I . 她刚才去学校了，我也是

She has finished the work. So have I . 她已经完成了工作,我也完成了。

She will go to school. So will he.　她将去学校，他也是。

9. yet 仍然，还　常用在否定句或疑问句当中

10. stay up 熬夜如：I often stay up until 12:00pm.我经常熬夜到12点。

11. clean up 打扫　整理　如：I have cleaned up the bedroom. 我已经打扫完了卧室。

12. 程度副词： always总是 usually经常 sometimes有时 never从不

如：I am always/usually/sometimes/never late for school. 我总是/经常/有时/从不上学迟到。

13. 曾经做某事：　

　　Do you ever get to school late? Yes, I do. /No, I don't.

Have you ever got to school late? Yes, I have. /No, I haven't.

14. go shopping(去购物), go fishing(去钓鱼), go swimming(去游泳), go