動詞的時態同學們經常會混淆，下面小編整理了英語語法基礎知識：動詞的四種時態，希望對大家有幫助！
(1)一般現在時：
一般現在時的構成
1. be動詞：主語+be(am, is, are)+其它。如： I am a boy. 我是一個男孩。
2. 行為動詞：主語+行為動詞(+其它)。 如： We study English. 我們學習英語。
當主語為第三人稱單數(he, she, it)時，要在動詞後加"-s"或"-es"。如：Mary likes Chinese.瑪麗喜歡漢語。
動詞+s的變化規則
1.一般情況下，直接加-s，如：cook-cooks, milk-milks
2.以s. x. sh. ch. o結尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes
3.以“子音字母+y”結尾，變y為i, 再加-es，如：study-studies
(2)一般過去時:
動詞過去式詳解 動詞的過去式的構成規則有：
A、規則動詞
① 一般直接在動詞的'後面加ed：如 worked , learned , cleaned , visited
② 以e結尾的動詞直接加d：如 lived , danced , used
③ 以子音字母加y結尾的動詞要改y為i再加ed(此類動詞較少)如 study – studied carry – carried worry – worried (注意play、stay不是子音字母加y,所以不屬於此類)
④ 雙寫最後一個字母(此類動詞較少)如 stopped
B、不規則動詞(此類詞並無規則，須熟記)國小階段要記住以下動詞的原形和過去式：sing – sang , eat – ate ,
see – saw , have – had , do – did , go – went , take – took , buy – bought , get – got , read – read ,fly – flew , am/is – was ,
are – were , say – said , leave – left , swim – swam , tell – told , draw – drew , come – came , lose – lost , find – found , drink – drank , hurt – hurt , feel – felt
(3)一般將來時：
基本結構：
①be going to + do;
②will+ do. be going to = will
I am going to go swimming tomorrow(明天). = I will go swimming tomorrow.
(4)現在進行時: am,is,are+動詞現在分詞
動詞現在分詞詳解 動詞的ing形式的構成規則：
① 一般的直接在後面加上ing , 如doing , going , working , singing , eating
② 以e 結尾的動詞，要先去e再加ing ，如having , writing
③ 雙寫最後一個字母的(此類動詞極少)有：running , swimming , sitting , getting.
