英文tense問題 (was + pp.)

問:
我既工作有send documents 同 check the records 應該點講?

答:
It is my job to send documents and to check the records.
==============
1. My jobs were sending documents and checking the records.
( 文法錯，因為我的工作是不會做任何事的)
2. My jobs were sent documents and checked the records.
( 文法錯，因為我的工作是不會被任何事做的)
3. I was eating an apple. ------文法正確
( 意思是昨天在這時間我正在吃一蘋果 )----過去進行式
4. I was eaten an apple.<< 被動式?.------文法不正確
(An apple was eaten by me)?<< 被動式-----文法正確
5. I ate an apple..------文法正確
( 意思是昨天我吃了一蘋果)----過去式

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問:
was/were後面係咪一定係pp.或者+ing?

答:
不一定，
例如:
1. She was very kind to me.
2. They were very cruel to animals. ======================
問:
had been "pp."同had "past tense"既分別

答:
had +"past tense"-------文法不正確
had been +"pp."-------過去完成式 ( 被動)
例:
The apple had been eaten by my sister before I came home last night.