不定式infinitive和分词participle和动名词

不定式infinitive和分词participle和动名词
如何分别不定式 和分词 和动名词?
我看到书上说分词可以用作宾语补足语
与感官动词一起用
i saw him being taken away by the police.
但是在不定式bare infinitive中也是用於感官动词之后
如:i saw jim get into his car and drive away.
要如何分别?是不是2类答案也可?
分词中
_____english is different from _____ english in many ways.
A.spoken;written B.speaking;written C.spoken;writing D.speak;write
为什麼是b?
_____from the space,the Great Wall looks like a dragon.
A.haveing seen B.seeing c.seen D.To see
为什麼是c?
分词在条件状语时 的用法?
如:Considered from this point of view,the question will be of great value.
要怎样分别是该用considering还是considered?
不定式
Please let me ____ where the meeting is_____tomorrow.
A.know;to be held B.to know; to hold C.knowing; to be held D.known; to hold
为什麼是A?
因为星期三要考英文啊!
希望各位帮帮手!救一救我!