He can speak english,这句是第三人称单数为什么speak不加s?

He can speak English He can speak () () English. he can speak ( )( )english ( )( )french He can a___ speak English. he can o_____ speak English. can he speak english?yes ,he can speak much. He can speak (English)括号部份提问()() he speak? He can speak English的反义疑问句. He can speak very good s_____ English. He can speak English.改为被动语态 He can speak English and French· Because he can speak English是什么意思 he can't speak english .为什么speak不加s he can speak english he can speak french,too 同义句he can speak （）（）english（）（）french he can't speak much english和he can’t speak many english 有什么区别 The boy can ________(hard) speak English,can he? he can speak english better if he p___ more. He can speak English,too.(改为否定句) He ___ speak English,____.