1.表示哪国人
中日不变，英法变，其余后面+s
土豆的复数 potatoes 有生命+es
照片的复数 photos 无生命 +s
黑人 negroes
土豆,番茄,英雄,黑人是所有以“O”结尾的英语单词中唯一四个复数加"es"的,可以这样方便记忆Negroes and heroes like tomatoes and potatoes 黑人和英雄喜欢番茄和土豆
2. 孩童时代 childhood 社区 neighborhood
3.now=at the moment
Look、Listen、Now都要用正在进行时
4.tired劳累 tiring 令人劳累的
人作主语 用tired I'm tired.
物作主语 用 tiring The exam is tiring.
5.There be 句型 there is / there are
将来式 will+动词原形
There will have（X）
There will be（✅）
will= be going to
There will be two tall buildings in the future.
There are going to be two tall buildings in the future.
就近原则
There be/not only…but also/either …or（要么…要么）
Not only my mum but also I like watching TV.
Not only I but also my mum likes watching TV.
6.sharpen（使…锋利）-sharpener（卷笔刀）
7.full 发音短u fool 发音长u
被…充满 be full of
8.Large 反义词 little / big 反义词 small
s：small/m:midium/L: large
9. steak 牛排 beef 牛肉 pork 猪肉 chicken鸡肉
10. L21语法 one，为了避免重复，用one代替
I have many roses. I like red rose,white rose and yellow one. one代替rose.
