關於英文的時式(中二)

1. For your following questions please look at this web site. It is in simple English with drawings so very easy to understand :
進行式同現在進行式有乜分別?


進行式又同將來式又有乜分別?
going to - look at the "Future Continuous tense"
+ing - look at "Gerund"
http://www.englishpage.com/verbpage/presentcontinuous.html
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咩時候要加s/es?
I think you are talking about verbs. Please note :
For third person singular, that is : he / she / it, we need to add s/es
For it, we are talking about a noun that is only one, e.g. one dog - this is what we called "singular".
Then for I / you / we / they, we do not need to add s/es. E.g.
I am a boy
You are a girl
We are girls
They are boys
If you still have question, please send me a letter.