I could , I would 後面 應否用過去式?

could同would系modal verb
後面應該用bare in.的字
即系唔轉

"would" and "could" are called "Modal verbs".

After modal verbs, it is not necessary to change the verb follows.

So, you should say, "I could go to school early today but I didn't do so" and "I told her that I would go to school early the next day".

The verb "go" here is called bare infinitive.

Remember, you need not change the form of the verb after all modal verbs including "shall", "will", "may", "might", "should", "can", "could" and "would".

could/would + i bare infinitive

2006-11-29 00:24:58 補充：
could/would + bare infinitive

系 I could have 同埋 I would have 後面用過去式。
could / would 系將來式, 唔可以用過去式。
可以 -不能用過去式。 本可 -就可以。

I could have went to school early. 我本可以早D 到學校。
I could go to school early / I went to school early.
我可以早D 去 / 我已經早左去學校。

I would have went to school early. 本可以
I would have went to school early if you tell me there was an exam today.

can,could, shall,should, will, would,may,might...
呢d 都係modal verb..係跟原形呀ma...

NO,,YOU ARE WRONG!!!!!~
AFTER WOULD OR COULD,,TENSE唔可以CHANGE!!!!!!!!!!!!!~

2006-11-28 23:45:11 補充：
BECAUSE WOULD & COULD = WILL & CANBOTH OF THEM CAN'T CHANGE THE TENSE!!!!!!~

2006-11-28 23:48:37 補充：
I would GO to school early.I could GO to schoo early.

i could = i can 後面都會用過去式
i would = i will 都係唔會用過去式