can't 不可能，不会（可能性几乎为零）
The dictionary must be mine.
The CD might/could/may belong to Tony because he likes listening to pop music.
The hair band can't be Bob's.
2. whose :谁的，是个疑问词，作定语，后面接名词
如：Whose book is this? This is Lily's.
3. belong to 属于如：
That English book belongs to me.
4. 当play 指弹奏乐器时，常在乐器前用定冠词the
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
play football play basketball play baseball
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
If you don't hurry up, you'll be late. 如果你不快点，你将会迟到
6. if you have any idea= if you know 如果你知道
7. on 关于（学术，科目）
8. try to do sth. 尝试做某事（重要考点，大家要记住尝试做某事后面用的是不定式to do）
I try to climb the tree. 我尝试爬树。
9. because of:由于, because:因为，它们的用法是：
because of + 名词/代词/名词性短语（这是一个重要的短语）
because + 从句
I do it because I like it. 我做这件事是因为我喜欢。
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