英语中的主语一般不可省略，但在口语中某些惯用表达也可省略。如：

Beg your pardon. 请再说一遍。

Haven’t seen you for ages! 好久不见了!

Second the motion! 附议!

Doesn’t matter. 没关系。

Serves him right! 活该!

Looks like rain. 像是要下雨的样子。

Glad to see you. 很高兴见到你。

Hope to hear from you soon. 希望不久能接到你的来信。

Must have gone home. 准是回家了。

有时主语和助动词一起省略：

(Do you) Want some? (你) 要一点吗?

(Have you) Had a good time? 玩得好吗?

(We’ve) Got to go now. 得走了。

(I’m) Not feeling very well today. 今天感到不太舒服

(I’m) So pleased to have made your acquaintance. 认识了你很高兴。

(It’s) Nice day again. 又一个好天。