past tense同 pp的分別

你o既問題唔係「past tense 同 past participle (pp) o既分別」，而係被動式 passive voice。睇睇以下解釋：
= = = = = = = = = = = = = = = = = =
passive voice 就係將接受動作o既object作為句子開頭。用法：
１．唔知件事邊個做 e.g. The man is killed!
２．邊個做唔重要／唔講都知 e.g. The fine for smoking has been increased.
３．唔想講邊個做 e.g. Mom, the window has been broken...
結構一定係：
接受動作o既受詞 + (助動詞 auxiliary verb - have/can/is/should...) + be (is/am/are/was/were/being/been) + past participle
主動式句子o既主要動詞（話你知做乜野事o既動詞），會變 past participle，而主要動詞本來o既 tense，就會用左o係 be 度，助動詞 不變。
e.g. X has borrowed the book. => The book has been borrowed.
呢句係 present perfect tense，注意雖然有 past participle，呢句冇變 tense（明明同 active voice 講緊同一件事，tense 點會變？）。唔好再諗轉tense啦！
圖片參考：http://hk.yimg.com/i/icon/16/3.gif

最緊要留意加be呢個部份。be 出現係用返be定係其他(is/am/are/was/were/being/been) ，就睇佢後面o個個動詞。呢句borrowed 係 past participle，be 就用 past participle = been。
再一例子，本來係 is doing就變 is being done，is doing係現在進行式，變passive voice後，is being就一樣係現在進行式，本來個doing就乜都唔理轉做過去分詞 done => is being done。搞掂。
= = = = = = = = = = = = = = = = = =
睇返你o個兩句：
１．I am doing the homework which is given by Miss Wong
「功課 係 Miss Wong 俾o既」，呢部份 passive voice。
２．There is always a lot of things needed to be done
「工作要（被）完成」，都係 passive voice。
由於 passive voice 必須將本來主要動詞變 past participle，所以其實唔係因 past tense 而用。事實上，第一句係 present tense（is），第二句先係 past tense（needed）。

I am doing the homework which is gave by miss wong WRONG GRAMMAR

I am doing the homework which is given by Miss Wong CORRECT


There is always a lot of thing need to be done WRONG GRAMMAR

There is always a lot of thing need to be did WRONG GRAMMAR

It should be :
There are always a lot of things needed to be done.