He runs fast.为什么run后面要加s啊

He runs fast.为什么run后面要加s啊 Who runs fast?为什么run加s 为什莫He runs fast.run 后面加 s . he can not runs fast.此句run要否加s Tom runs very quickly ,but he does' run very fast .peter runs very slowly ,but he runs veiy fast. he runs fast.这是系表吗? He can runs fast.改错 his brother is very strong .he usually runs fast .(该简单句)his brother is strong run fast so that 的倒装he runs so fast that no one can catch him请问将这句话倒装后是：so fast runs he that no one can catch him还是so fast does he run,that no one can catch him so fast (does he run) he runs为什么只能用括号里的为什么只能说SO FAST DOES HE RUN虽然我知道这是部分倒装既然有了DOES为什么还能用RUN呢?好象是高二上册的内容 ( ) 5.Jack _____ Tom.A.not runs so fast as B.runs not fast as C.doesn’t run as faster as D.doesn’t run so fast as 能否请您告诉我为什么以及翻译呢,麻烦啦 He likes running,he ________fast.( run,runs) He runs fast.改为感叹句.Thanks. Ben runs fast.I run faster.合并一句 jim run fast .tom runs farst er 合并为一句话 Mr.Green ____ fast and he likes ___ very much.填什么?A.run;runB.run;to runC.running;runningD.runs;running 英文求教Nancy doesn’t run fast 肯定句是 Nancy runs fast 这个 Nancy can run fast 有这样一个题目：jim ______ as fast as than me.空格要填run 但是填runs还是run啊！为什么啊