I'd 如何区分是I could还是I would?

I'd 如何区分是I could还是I would? 怎么区分I’d 是I had 还是I would I'd 是指I could 还是I would?I could 和I would I could 是我能.I would 是我会. I didn’t think I’d make it这里的I’d是I would还是I could的缩写? I'd=i would 也可以是i'd=i had?要如何区分句中指的是哪一个呢,在句中缩写后,如何知道是指 I would 还是 I had? he could not finish the homeworkso could i/nor could i这里so could i 和nor could i 是我也不能的意思还是我能 Could I give me an apple回答是用yes,I can还是yes,I could.否定是用no.I can not还是no I could not I’d 是I would fail?还是I had fail? I wish I could. I hope I could I love to sleep.I'd sleep all day if I could.中文意思是? She had changed so much that I could hardly him .She had changed so much that I could hardly him .A.know B.see C.meet D.recognize麻烦讲一下如何区分 Could I borrow your book?回答是Yes,I can.还是Yes,I could?输错了，回答是Yes,you can.还是Yes,you could? May I Could I May I 怎样区分?（期待你的回答） I have done what I could do 是对的还是I have done what I could do 是对的? I'd bettle hit the books!这句话中的I'd 是I had I would还是 I should? i wish i could bring you to see my point.是埋怨还是希望? 我简直说不出话来英语是：I can hardly speak还是I could hardy speak?