The Zero Conditional

Tom: The printer has jammed again. What do I do?
Chantal: When there's a paper jam, call Noel in tech support.
Tom: But, it's easy to fix.
Chantal: I know, but it's company policy. If the boss sees anyone trying to fix the printer, he gets upset.

Past Simple & Present Perfect | Good Together

Wayne: Have you been to many countries, Gavin?

Gavin: Yes I have. I went to Italy and Morocco last year. How about you?

Wayne: Not really. I've been to the United States several times on business, though.

Gavin: My brother drove down to Vermont two months ago, but I have never travelled in the US.

Tenses: Time Lines & Examples

A graphic on past, present, and future tenses. Pictures can make language and grammar very clear, especially when we're talking about time. 

Please study the timelines and examples below.