can的过去式是?please help me请详细点，谁的详细就用谁咯

can的过去式是?please help me请详细点，谁的详细就用谁咯 could 是can的过去式,那为什么could you help me 用could,又不是过去式 can you help me,please?的答句速回 Can i help you 的回答是什么?是用Yes,please还是用Yes,you can? 以下几个动词的过去式与过去分词是怎样的?watch call thank please can need let play sound like help want join dance paint listen start survey help的过去式是原型吗 Can I help you please. Can I help you please. help的过去式是什么? help的过去式 help的过去式 A:Can I help you?B:Yes,please.I'm___ ___a sweater.是在商店里买东西的时候。 Can you help me learn English?Please! English摘抄can you help me please 写出下面单词的过去式come() kake() win() can() help() go() lose() forget() see() can的过去式 can的过去式是什么? can 的过去式是什么```