为什么speak要读成sbeaks后面接的清辅音都要变成浊辅音吗?为什么啊?

为什么speak要读成sbeaks后面接的清辅音都要变成浊辅音吗?为什么啊? Your angel will tell you how to speak.speak 后面要接宾语吗?为什么? speak后面加宾格吗 only now can i speak of it without tears in my eyes1 为什么倒装?2 speak 后面不用of行不行? nice to speak to you 和 nice to meet you为什么后面少一个TO The little boy can hardly speak,后面写什么,反义疑问句,为什么 为什么We find it necssary that we speak English中it后面不加is? I don't even get a chance to speak to them中的to是介词 为什么后面的speak不用加ing?是固定搭配的原因吗 speak the truth 为什么用speak? 英语翻译为什么不用speak speak后面往往接某种语言作宾语直接比如说English、french等? as 后面的省略He can speak english as well as you.为什么不可以说成He can speak english as well as you can speak english.as 不是引导比较状语从句吗 What languages does Robert speak?为什么languages写在what 后面,.句型不是这样的吗,what +Be+主+其它 祈使句No one can speak English here except you and she.here 为什么要提到 no one 的后面? speak 后面加语种（越多越好!如：speak English ,speak Chinses .）有越多越好啊~本人急用! She always goes to school by bike这句话对吗?那She writes well but speak not well.这句话呢?speak后面不要加S吗?为什么不是动词后面都要加S吗? speak 后面可以加说话内容吗Say 后面可以加,但Speak呢? Shespeakchineseandenglish SPEAK为什么加S