英語的學習形成不是一日之功，必須從平時的課堂學習一點一滴抓起，持之以恒。接下來小編搜集了初三英語下知識點總結，歡迎查看，希望幫助到大家。
一、常用連接詞
1.表文章結構順序：First of all, Firstly/First, Secondly/Second…And then, Finally, In the end, At last
2.表并列補充關系的：What is more, besides
3.表轉折對比關系的：However, butAlthough + clause（從句） On the one hand… On the other hand… Some… while others…
4.表因果關系的：Because, As ，So, Thus, Therefore, As a result
5.表換一種方式表達：In other words
6.表進行舉例說明：For example，句子；For instance，句子；
7.表陳述事實：In fact
8.表達自己觀點: In my opinion
9.表總結：In a word In summary
10.文中正確使用兩三個好的句型，如：賓語從句、狀語從句、動名詞做主語等。
（1）賓語從句舉例：I believe Tianjin will be more beautiful and prosperous.
（2）狀語從句舉例：If everyone does something for the environment, our hometown will become clean and beautiful
（3）動名詞做主語舉例：Reading books in the sun is bad for our eyes.
It's bad for our eyes to read books in the sun.
二、常用狀語從句
1.時間：when, not…until, as soon as
2.目的`：so that+從句; to do（為了）
3.結果：so…that+從句, too…to do（太……以至于……）
4.條件：if, unless（除非）, as long as（只要）
5.讓步：though, although, even though, even if ，no matter what/when/where/who/which/how6.比較：as…as…, not so…as…, than
三、重點句型
1.It is said that + 句子 據說…It is reported that + 句子 據報道…
2.There is no need to do 沒必要做…
3.It's adj. for sb. to do 做…對某人來說…
4.so/such… that … 如此… 以至于…too … to do 太… 而不能…
5.not…until… 直到…才… 例： I didn't go to bed until my mother came back.
6.The reason why + 句子 is that + 句子 … 的原因是…
7.The reason why he got angry was that she told him a lie. (他生氣的原因是她對他說了謊)
8.That is why + 句子 那是…的原因
9.That is because + 句子 那是因為…
10.as we all know, +句子 據我們所知
11.it is generally / publicly known / considered that…, 眾所周知
四、介詞by的用法
1. 意為“在……旁”，“靠近”。
Some are singing and dancing under a big tree. Some are drawing by the lake.
有的在大樹下唱歌跳舞。有的在湖邊畫畫兒。
2. 意為“不遲于”，“到……時為止”。
Your son will be all right by supper time.
你的兒子在晚飯前會好的。
How many English songs had you learned by the end of last term?
到上個學期末你們已經學了多少首英語歌曲?
3. 表示方法、手段,可譯作“靠”、“用”、“憑借”、“通過”、“乘坐”等。
The monkey was hanging from the tree by his tail and laughing.
猴子用尾巴吊在樹上哈哈大笑。
The boy’s father was so thankful that he taught Edison how to send messages by railway telegraph.
孩子的父親是那么的感激,于是他教愛迪生怎樣通過鐵路電報來傳達信息。
4. 表示“逐個”，“逐批”的意思。
One by one they went past the table in the dark.
他們一個一個得在黑暗中經過這張桌子。
5. 表示“根據”，“按照”的意思。
What time is it by your watch?
你的表幾點了?
6. 和take , hold等動詞連用，說明接觸身體的某一部分。
I took him by the hand.
我拉住了他的手。
7. 用于被動句中，表示行為主體,常譯作“被”、“由”等。
English is spoken by many people.
英語被許多人說。（即“許多人講英語。”）
五、重點短語
1. at the moment
2. used to
3. for a while
4. walk away with sth.
5. leave for some place
6. sooner or later
7. pay for
8. come up with an idea
9. think of
10. have a try
11. all over the world
12. be famous for
13. large numbers of
14. all the year round
15. no matter what
16. give up
17. for example
18. by the way
19. on business
20. so far
21. come true
22. set off
23. slow down
24. go on doing
25. wait for
26. be proud of
27. be afraid of
28. speak highly of
29. a year and a half
30. half a year
31. pick up
32. as soon as
33. keep clean
34. take care of
35. cut down
36. make a contribution to
37. base on
38. make sure
39. take away
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