文档介绍：人教版九年级英语下册知识点
Unit1
1. by + doing 通过……方式如:by studying with a group
  by 还可以表示:“在…旁”、“靠近”、“在…期间”、“用、”
“经过”、“乘车”等
如:I live by the river.        I have to go back by ten o’clock.
        The thief entered the room by the window.
        The student went to park by bus.
2. talk about 谈论,议论,讨论如:The students often talk about movie after class. 学生们常常在课后讨论电影。
talk to sb. === talk with sb. 与某人说话
3. 提建议的句子:
①What/ how about +doing sth.? 
如:What/ How about going shopping?
   ②Why don’t you + do sth.? 如:Why don’t you go shopping?
   ③Why not + do sth. ?      如:Why not go shopping?      
   ④Let’s + do sth.           如: Let’s go shopping
   ⑤Shall we/ I + do sth.?     如:Shall we/ I go shopping?
4. a lot 许多  常用于句末如:I eat a lot. 我吃了许多。
5. too…to 太…而不能  常用的句型 too+adj./adv. + to do sth.
如:I’m too tired to say anything. 我太累了,什么都不想说。
6. aloud, loud与loudly的用法
    三个词都与"大声"或"响亮"有关。
   ①aloud是副词,重点在出声能让人听见,但声音不一定很大,
常用在读书或说话上。通常放在动词之后。aloud没有比较级
形式。如: He read the story aloud to his son.
他朗读那篇故事给他儿子听。
②loud可作形容词或副词。用作副词时,常与speak, talk,
laugh等动词连用,多用于比较级,须放在动词之后。如:
She told us to speak a little louder. 她让我们说大声一点。
③loudly是副词,与loud同义,有时两者可替换使用,但往往
含有令人讨厌或打扰别人的意思,可位于动词之前或之后。如: 
He does not talk loudly or laugh loudly in public. 他不当众大声谈笑。
7. not …at all 一点也不  根本不  如:
    I like milk very much. I don’t like coffee at all. 我非常喜欢牛奶。我一点也不喜欢咖啡。
  not经常可以和助动词结合在一起,at all 则放在句尾
8.    be / get excited about sth.=== be / get excited about doing sth.  
=== be excited to do sth. 对…感兴奋如:
   I am / get excited about going to Beijing.===
   I am excited to go to Beijing. 我对去北京感到兴奋。
9. ① end up doing sth    终止做某事,结束做某事  如:
    The party ended up singing. 晚会以唱歌而结束。
  ② end up with sth.    以…结束如:
    The party ended up with her singing. 晚会以她的歌唱而告终。
10.   first of all 首先
.    to begin with 一开始
     later on 后来、随
11.  also 也、而且(用于肯定句)常在句子的中间
    either 也(用于否定句)常在句末
    too  也(用于肯定句)   常在句末
12. make mistakes 犯错如:I often make mistakes. 我经常犯错。
make a mis