以下是四年级上册英语1到4单元的常用表达法：问候和告别：Good morning/afternoon/evening. 早上/下午/晚上好。

Hello/Hi. 你好。Goodbye. 再见。See you later. 待会儿见。介绍和自我介绍：My name is... 我叫…I'm... 我是…This is my friend. 这是我的朋友。Nice/Glad to meet you. 很高兴认识你。感谢和道歉：Thank you. 谢谢。You're welcome. 不客气。Sorry. 对不起。That's okay. 没关系。请求和建议：Can I have a look？我可以看一下吗？Please sit down. 请坐。Do you want to come with me？你想和我一起去吗？It's a good idea. 这是个好主意。购物和点餐：I'd like to buy... 我想要买…How much is it？多少钱？Can I try it on？我可以试穿一下吗？What would you like to eat/drink？你想吃什么/喝什么？