实用法宝
续性动词，如：leave --- be away, die --- be dead, borrow ---- keep, buy—have, come ---be here, join –- be in/ be a member of 等。如：
He has left already.
He has been away for two hours.
8B Unit 2
1. 过去进行时 was / were + doing 表示过去某个时刻正在进行的 。
2. 肯定、否定和疑问形式.
3. while 和 when在过去进行时中的用法：
进行时+ while +进行时
过去式，while + 进行时 = when +过去式，进行时
例：I was doing my homework while my father was watching TV..
The bell rang while he was reading books.
When the bell rang, he was reading books. (以上这两句主从句前后可以互换)
8B Unit 3
被动语态
1． 结构：be + PP 时态变化都只改变be 的各种形式
2． 肯定、否定和疑问形式
3． 不是所有的动词都有被动形式，如感觉动词: feel, smell, look, taste, sound 和 happen, take
place 等。
4． 主动形式表被动意义，如: This shirt sells well.
（详细见课件复习）
8B Unit 4
1. because, because of, so 的用法。
because + 从句， because of +短语 (but: what you said), 两者后都跟原因。
so 后跟结果的从句。同一句子中，不能同时出现because/ because of和 so.
2．hope & wish的用法
hope 所希望的是有可能实现的，但wish所希望的是现在不可能实现的。
如：I hope you can come to my party.
3.主语 hope to do sth., 主语hope其他人做某事，要跟从句。
wish可用来向某人祝福，如： I wish you a happy new year!
8B Unit 5
1. 宾语从句(陈述句、一般疑问句、特殊疑问句)
2. used to & be used to 的用法
意思为：过去常常，过去曾。如：
He used to be a teacher. He used to get up early.
意思为：习惯于做某事，如：
He is used to the bad weather. He is used to getting up early.
8B Unit 6
三个句型结构：
1． It‘s +形容词 + that 从句，如：
It is necessary that we help the elderly.
2. It‘s + 形容词 + to do sth.， 如：
It‘s useful to learn English well.
3. It‘s +形容词+ for sb (not). to do sth.，如：
It‘s necessary for us to protect the environment.
9A Unit 1
1. 句式：It is +形容词（性格）+of sb.+ (not) to do sth.
如：It‘s kind of you to help me.
2. 句式： 主语+ be +形容词+enough + to do sth.
如： They are patient enough to wait for me for 2 hours.