四年级下册小学英语必考基础知识大汇总通用版不分版本

小学英语必考的基础知识大汇总

1 基础知识

1.字母：26个字母的大小写

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

a b c d e f g h i j k l m n o p q r s t u v w x y z

2.语音：元音的发音

五个元音字母：AEIOU

12个单元音： 

前元音：[i:]  [ɪ]  /e/  [æ]

中元音：[ɜ:]  [ə]

后元音：[ɑ:]  [ɒ]  [ɔ:]  [u :]  [ʊ] [ʌ] 

双元音（8个）

合口双元音（5个）[ai]  [ei]  [au]  [əu]  [ɔi]

集中双元音（3个） [iə]  [εə]  [uə] 

3.词汇：单词常见考点

单词完全形式

1.who's = who is

2.she's = she is

3.he's = he is

4.what's = what is

5.where's = where is

6.we're = we are

7.you're = you are

8.that's = that is

9.I'm = I am

10.isn't = is not

11.aren't = are not

12.they're = they are

13.don't = do not

14.let's = let us

15.can't = can not

16.it's = it is

17.I've = I have

18.I'd = I would

19.hasn't = has not

单词复数形式

1.bus —— buses

2.box —— boxes

3.glass —— glasses

4.class —— classes

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