Can you speak English?和Can you speak in English?的区别

Can you speak English?和Can you speak in English?的区别 Can you speak english? Can you speak （)English. Can you speak english, Can you speak English Can you speak it in English改错 Can you speak in English改为祈使句 can you speak english.是什么意思? you can speak English 翻译! can you speak english (slow) Can you speak it in English为什么用speak what do you speak English和can you speak English是一样的?