英 文 文 法 問 題

Present perfect tense:-
I have met;
It denotes present results of past actions,state of mind.
Note that the words' for' and 'since' are used.
eg:-I have met her before due to my bad memory;
--------------due to my inability to remember
--------------due to my inability to recall.
--------------due to my inability to retent.
-----I have met her before 'for' a certain period of time.
eg:-I have met her before 'since' we were in love.

When two actions happened in the past one after another, we use the past perfect tense for the first action.
eg:-had met;
eg:- I had met her before she left in politics !

2015-03-29 02:04:33 補充：
Jessica had met past perfect tense before she met the Contentment n.
had met=past perfect tense.

2015-03-29 02:16:34 補充：
Jessica had met past perfect tense before she met the Contentment n.
had met=past perfect tense.

- :D

Have met >>> Present Perfect Tense
Had met >>> Past Perfect Tense

Use past perfect tense when you talk about something that happened before another thing. e. g.
I had breakfast before I left home.

Therefore, it is ok to say "I am sure (that) I have met her somewhere else before" or "I am sure (that) I had met her somewhere else before we met last week."

We probably would use the first sentence if we are still in the meeting. The time frame for the previous encounter is sometime in the past. It could be anytime before now.

In the second sentence, we met her again last week. The previous encounter took place anytime before last week, not anytime before now.

早前我上載了一些錄像在Youtube，解釋一些基本的文法規則，希望可以幫到你。 http://www.youtube.com/watch?v=ceFJv0GATcY

Jessica，很久不見啦～

had met 是 past perfect tense，過去完成式。