英文用詞 ?

1. Noun是不會有tense 的。只是verb會有tense 的。

2. Have not 後面 + past participle (很多時和past tense一樣串法) = present perfect tense

3. Did not receive 是 past tense.

4. Have not received 是 present perfect tense.

2008-06-28 17:56:34 補充：
Did not receive 當時沒有收到 (at a certain time in the past)
Have not received 仍沒有收到 (until now)

I did not receive it on Monday. I received it on Wednesday. I have already received it.

have-not 是 窮人;貧窮或缺乏資源之國家
did not = didn't 是 不能

不知道對不對，希望幫到你。

have not的意思大多是{沒有}的意思,而did not 大多是解沒有做的意思,所以兩者就有很大的分別!have not 係沒有這樣東西,did not 係沒有做.

have not is a present tense,did not is a past tense.