最新人教版九年级第九单元常见短语及知识点总结
Unit 9 I like music that I can dance to.
一.重点短语
1.stay away from 远离
2. be sure 确定；确信
3. be sure to do 一定要做某事
4.make sure that...确保…;确定…
5. stay out待在外面
6. stay up熬夜
7.in that case既然那样8.in case万一
9.stick to坚持;固守10.in total总共；合计
11.plenty of 大量；充足12.once in a while偶尔；间或
二.重点语法
1.prefer的用法
【1】prefer A to B、A与B相比较,比较喜欢A
例:I prefer English to Chinese.I prefer fish to meat.
【2】prefer doing A to doing B,A与B相比,比较喜欢做A
例：I prefer swimming to running.
【3】prefer to do A rather than do B，A与B相比,比较喜欢做A
例：I preferred to stay behind rather than go with you.
【4】词组prefer not to do “不愿意做……”
2. whatever 相当于no matter what
例:Wherever you go, whatever you do, I’ll be right here waiting for you.
3. cheer up高兴起来；振作起来使欢乐；使高兴
例:Cheer up！Your troubles will soon be over．
He tried to cheer them up with funny stories．
1.marry娶;嫁;结婚;和...结婚marry sb. / get married 表示动作例. He married a pretty girl.
She married a soldier. =She got married to a soldier.
They got married last year.
4. keep healthy 保持健康
例. In order to keep healthy, he keeps jogging every day.
keep in good health, keep fit和stay healthy 都表示“保持健康”
巧记以o结尾的名词变复数：两人两菜一枝烟
注：两人指的是negro黑人,hero英雄,
两菜指的是tomato西红柿,potato土豆,
一枝烟,是说tobacco烟草,这些词变复数时要加是-es,
其余以o结尾的加-s。

5.定语从句
观察两个句子,看看有什么区别:
an interesting book 形容词interesting做定语修饰book
a book that is interesting that is interesting句子做定语修饰book
interesting/that is interesting作用是相同的,都是用作定语来修饰名词book, 这种在复合句中修饰名词或代词的从句叫做定语从句。

定义：复合句中，修饰某一名词或代词的从句叫做定语从句。

定语从句要跟在所修饰的名词或代词后面，被定语从句修饰的名词或代词叫
做先行词。

定语从句一般用关系代词who，that，which和whose来引导，放在从句的句首使从句与主句相连，并在句中担当一定的成分。

I like music that I can dance to. (作宾语)
I prefer singers who can write their own songs. (作主语)
注1：That在从句中作主语或宾语(作宾语时that 可省略)
（指物）A plane is a machine that can fly.(作主语)
The noodles（that）I cooked were delicious.(作宾语)
（指人）Who is the man that is reading the book over there? (作主语) The girl (that) we say yesterday was Jim’s sister.(作宾语)
注2：从句的谓语和先行词的单复数保持一致
I like a sandwich that is really delicious.
I love singers who are beautiful.
注3：Which在从句中作主语或宾语(作宾语时可省)
（指物）The silk which is produced in Hangzhou sells well. (作主语) The songs (which）Liu Dehua sang were very popular. (作宾语) 注4：Who(主语), whom(宾语)
（指人）例.The boy who break the window is called Roy. (作主语) The person to whom you just talked is Mr. Li.(作宾语)
注5：Whose 在从句中作定语指人或物的所有格
I like the girl whose hair is long.(作定语)。