Hi guys. Welcome to my channel "Cam Learning English". I'm going to share you about the English Lessons follow by Four kinds of English Course Books such as: Interchange1, Interchange2, Side by Side and True Stories in the News. Further more, I will offer you about Grammar lessons related to the books above and also out of these books.

Today, I will share you about Interchange1 |Present Perfect Simple & Simple Past|+|How to use For and Since|Page66-67|

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