The link from MrM is very useful. As a simple explanation for the beginning student, I recommend that one use when with the simple past and while with the past continuous. This is an oversimplification, but exposure to native writing and

Hi, 1. I walk and I do walking. What is the difference between these two? The latter is not very idiomatic. It sounds a bit like you are taling about your hobbies. 2. Drink milk before you go to sleep. and Drinking milk before sleeping

Hi, I'd change these: 5. The sun was eclipsed by the moon. ACTIVE PASSIVE 9. This bone has been buried by the dog . PASSIVE 10. It takes a long time to think of these examples . PASSIVE ACTIVE 13. There was a cup of coffee on the table but now

Hi Clive, Thanks for taking the time on my query. I guess what I had in mind when I used "had taken computer science for 2 semesters.." rather than the simple "took" was the deliberate intent to emphasize the duration I had

"If you knew what I had gone through, you would surely pity me." Don't listen to these people. You can change it to "have" because only the first verb has to be in the subjunctive mood. The verb "knew" is

Hi, the problem here is the difference between simple past and present perfect. There are a lot of thread about that in this forum, if take a look around with the search function. Generally speaking, if you want to mention something that happened

Sadr: I think you can get a full explanation by googling. In short, I believe that it has to do with the history of the language in England. Many years ago, in some parts of England, some people used "s" for the third person, such as

So, this is what I don't understand, what's the definition for a life experience? For me everything is a life experience. OK. So maybe that description of the usage of the present perfect tense doesn't quite explain it for you in an

Hi Plesehelp, Maybe this scenario can shed some light: In the office coffee room:... A: (pouring a cup of coffee while talking to B) I've heard that someone in the company has started a hiking club. B: Oh! you didn't

Hi, How would you say she has the same sweater as I in present perfect tense? She has worn the same sweater as I? But I'm trying to say she has the exact same sweater as me. You are just talking about a simple present