past perfect tense點用

Question

我唔識has、have、had係幾時先用
請教我 (請盡量用中文解釋)

Answer 1

has 是在單數時用的

have是在眾數時用的

had是在單數,眾數都可以用,不過,要全個意思都是過去先可以用....

(字眼:already,yet,before,after,once.twice,many times.....)


e.g(has: He has met May already.)
(have:They have not drunk some water yet)
(had:They had eaten bread last night)

Answer 2

When used as a main verb, has/have indicates the present tense and had indicates past tense. Compare:

'I have a very bad cold, so I can't come camping this weekend.'
'I had a very bad cold last week, but I'm feeling better now.'


圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif





圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif


圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif


圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif


圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif


圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif



圖片參考：http://www.bbc.co.uk/worldservice/learningenglish/grammar/learnit/images/furniture/clear.gif

Students often make mistakes, I find, when combining the past perfect with the past simple. The past perfect form of the verb always contains had and a past participle and in using the past perfect with the past simple you are indicating that one action happened before another action in the past. Compare:

'When we arrived at the party, we found that the food had all been eaten.'
'We still hadn't finished the exam, when the invigilator told us to stop writing.'
'After I'd had my lunch, I sent all my e-mails.'