Present Perfect Tense & Past Perfect Tense

anthony

請問以下這兩句子有什麼分別呢？
1.He has walked for several hours.
2.He had walked for several hours.

SusanCrystal

He has walked for several hours.
佢已經行左幾個鐘頭, 而家仲行緊

He had walked for several hours.
佢已經行左幾個鐘頭, 但係而家冇行啦

oscar

Originally posted by anthony at 2005-8-14 14:41:
請問以下這兩句子有什麼分別呢？
1.He has walked for several hours.
2.He had walked for several hours.

第二句應該是錯的...
Past Perfect Tense通常會與Past Simple Tense一起用
除非你現在用的是Indirect Speech

anthony

Originally posted by oscar at 2005-8-15 11:51 AM:

第二句應該是錯的...
Past Perfect Tense通常會與Past Simple Tense一起用
除非你現在用的是Indirect Speech

那麼如果第二句加了"after"、"by"等字(例如：By seven o'clock, he had already walked for several hours"，那一句是否還是錯的？

oscar

Originally posted by anthony at 2005-8-15 12:57:

那麼如果第二句加了"after"、"by"等字(例如：By seven o'clock, he had already walked for several hours"，那一句是否還是錯的？

這樣就對了~
Past Perfect Tense一定要有一個含"by"、"before"的Adverb Clause of Time(例如："by last June", "before I went to sleep")
使用"after"時，那個句子結構便是「After + (clause with Past Perfect Tense), (clause with Past Simple Tense/Present Perfect Tense)」或「(clause with Past Simple Tense/Present Perfect Tense) + after + (clause with Past Perfect Tense)」

anthony

我看過我的 Form 3 英文作業的例子，其中有一句是這樣的：
After I had said/(said) goodbye to you, I bought a T-shirt. (摘自 New Oxford English Workbook 3A P.21 Part 1)

這一句中的斜字(had said 和 said)是否相通的？如果是相通的，那麼是不是所有這類型的句子都可以隨便選一個 tense 來用(past perfect tense 或 simple past tense)？

zubat

Originally posted by anthony at 2005-8-15 06:26 PM:
我看過我的 Form 3 英文作業的例子，其中有一句是這樣的：
After I had said/(said) goodbye to you, I bought a T-shirt. (摘自 New Oxford English Workbook 3A P.21 Part 1)

這一句中的斜字(had sa ...

兩種tense都得
不過有少少唔同
用past perfect就是強調事情發生先後, 著眼點在時序上
用simple past就是只描述兩件過去的事件