三年级上册常用表达法是如下：
1、Hello! Hi!
2、Hello! I'm Wu Yifan. I'm from China.
3、What's your name?
4、My name's Chen Jie.
5、I have a pencil. Me too.
6、Good morning. Good afternoon.
7、This is Miss White. Nice to meet you.
8、Where are you from? I'm from America.
9、Let's go to school. OK.
10、How many cakes? One cake.
11、How are you? I'm fine, thank you.
12、Let's paint. Great.
13、I like green. Me too.
14、I have a rabbit.
15、Cool! Super! Great! Wow!
16、May I have a look? Sure.
17、Here you are. Thank you. You're welcome.
18、I like hamburgers. Me too.
19、Have some French fries.
20、Can I have some chicken? Sure.
