10. own v.－owner n.　 listen v.－listener n.　 learn v.－learner n.

9. because of , because

　 because of + 名词/代词/名词性短语

　 because +　从句　如：

　I do it because I like it. 我做这件事是因为我喜欢。

　　 I had to move because of my job. 因为工作的原因我得搬家。

8. try to do sth. 尝试做某事　如：I try to climb the tree. 我尝试爬树。

7. on　关于(学术，科目)

6. if you have any idea== if you know 如果你知道

5. if引导的条件状语从句，主句用一般将来时，

从句用一般现在时代替将来时　如：

　If you don’t hurry up, you’ll be late.如果你不快点，你将会迟到

4.　 当play 指弹奏乐器时，常在乐器前用定冠词　如：

　play the guitar　 play the piano　 play the violin

当play 指进行球类运动时，则不用定冠词　如：

　 play football　 play basketball　 play baseball

3. belong to 属于　如：

　 That English book belongs to me.

2. whose 谁的　疑问词　作定语　后面接名词

如：Whose book is this? This is Lily’s.

The dog has died.------- The dog has been dead since last week.

⑷①have (has) been to + 地点　　 去过某地 已经回来

②have (has) gone to + 地点　　 去了某地 没有回来

③have been in + 地点　　　 一直呆在某地 没有离开过　 如：

She has been to Shanghai. 她去过上海。(已经回来)

She has gone to Shanghai. 她去了上海。(没有回来)

She has been in Shanghai for 2 days.她呆上海两天了。(没有离开过上海)

1.情态动词must, may , might, could, may , can’t表示推测含义与用法后面都接动词原形，都可以表示对现在情况的揣测和推断但他们

　 含义有所不同

　　 must 一定 肯定 (100%的可能性)

　　 may, might, could有可能，也许　 (20%－80%的可能性)

　 can’t 不可能，不会 　　(可能性几乎为零)

　 The dictionary must be mine. It has my name on it.

　 The CD might/could/may belong to Tony because

he likes listening to pop music.

　 The hair band can’t be Bob’s. After all, he is boy!