什来自么是三单

什来自么是三单

一般现在时主语单三人称时的动词变化

①在一般现肥防称氧裂搞在时中，当主语为第三人称单数时360问答，动词要用“s”型(即第三人称单数形式)。

②所谓动词“s”型的构成，可按名词变复数的规则来记，即:

(1)在动词尾直接加值s。如:

play-play矛出北般套s，want-wants，work-works，know-knows，help-he旧虽毛著lps，get-gets

(2)以字母s依井见犯振促此续办并信、x、ch或o结尾的动词扩加-es;如:

guess-guesses，f快齐血括ix-fixes，teach-teaches，brush-brushes，go-goes，do-does，watch-watches，catch-catches

(3)以辅音字母+y结尾的动词，先变y为i，再加-es。如:

study-studies，carry-carries孩她笔赶何急常松由海，fly-flies，worry-worries

③④强调如何将主语是第三人称单数的肯定句变为否定和疑问句备类。现举例说明:

1)Hismotherworksinafactory.

Hismotherd声完无果元买苦oesn’tworkinafactory.

Doeshismotherwo程较喜杂山模那积马rkinafactory?

2)MrLiteac朝席细放视体判样树附效hesusEnglish.

MrLidoesn’tt棉停实回家eachusEnglish.

DoesMrLiteachyouEnglish?

3)Mybrotherstudiesmathswell.

Mybrotherdoesn't值实济省才片年继英草studymathswell.

Doesyourbrotherstudymathswell?

其实三单的变化形式跟名词变复数是一样的。

好好学习哈O(∩_∩)O