为什么英语中要用“could you please give me a apple 而不用 an apple

为什么英语中要用“could you please give me a apple 而不用 an apple 英语中的Could I use bike 否定为什么是Yes,you could.参考书上说的. Nobody could ever replace you为什么用could不用can 英语书上的could you please?... Could you help me英语作文 问句英语.excuse me,could you please tell me how often为什么不能问how often do you exercise? Could you tell me how to p----- this word correctly Could you tell me where to p my car. Could you tell me how to p----- this word correctly Could you p us with some food and drink? could 是can的过去式,那为什么could you help me 用could,又不是过去式 what would you do if you ( )live your life over again?为什么用could/a.can b.could为什么could 英语题目I'm hungry.Could you give me______(nothing)to eat为什么这里不能用something?快快快 英语:去邮局怎么走:Could you tell me how to get to the.中的how后面为什么加to? 英语could you please help me 的同义句 could you please ___/_______me a ______- what does she do?Could you tell me?Could you tell me_____ ______ ____为什么？ ----Could you please help me carry the box?Its too heavy.----( )A.Sorry.I have no time.S.Its my p为什么不选A呢 改错-Could you help you?-Yes,I could.答案把yes,I could改成yes,I can,为什么呢?