I need / I needed 分別

I need

我現在需要


I needed

我曾經需要

2014-01-11 23:45:10 補充：
甲醫生說 I needed you to see this for youself.時,個needed 係指甲醫生未帶乙醫生去醫院之前,甲醫生看到一d事情,需要乙醫生看看,所以個needed 係指甲醫生未帶乙醫
生之前出現,所以用past tense.

而乙醫生看完後,甲醫生說I need you.個need係指乙醫生看完後先出現,所以用simple
tense

2014-01-11 23:46:23 補充：
sorry , simple present tense先岩^^

2014-01-12 12:27:43 補充：
其實甲醫生同乙醫生說 I needed you to see this for youself.時,個need一早已經
發生左

我試下用其他例子解釋:

當你架車壞左,((你這刻需要人幫你看看架車)),到左第日,你在車房同師父說:我先
前已需要你幫我看看架車I needed you to see my car.((個需要在見到師父前已發
生左))所以用past tense

當師父看完架車後,((你同師父說我現在需要你幫手))I need your help
((個需要在見到師父後先發生))所以用present tense

以上情形同甲醫生帶乙醫生去醫院差不多^^

needn't short for need not;
You needn't go if you don't want to(A said to B)I needn't have put on this thick white coat for surgery=but I did=needed.must needs=eg=If those are the patient case,we must needs go to see.(A said to B).It's a needy (adj)
need n eg:-if need be I want you to see the patient.(A said to B)
"Needed we go to see patient?"
=Need we go to see the patient.(in informal conversation)
You needn't go.(A said to B)

the first one is in present tense
while the later one is in past tense
distinguish them well ;D

I need 是現在式,而 I needed是過後式

present tense 和 past tense 的分別？

I need your help every day.

I needed your help last week.