We___(learn) five lessons since the beginning of this term He___(be) a Party member for three years

问题描述:

We___(learn) five lessons since the beginning of this term He___(be) a Party member for three years
如题.什么知识点?什么语法?

have learning
has been
考查现在完成时的知识.很简单的,找关键词,一般就是since,for之类的.