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)一般将来时：

　　基本结构： 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)现在进行时: am,is,are+动词现在分词

　　动词现在分词详解 动词的ing形式的构成规则：

　　① 一般的直接在后面加上ing , 如doing , going , working , singing , eating

　　② 以e 结尾的动词，要先去e再加ing　，如having , writing

　　③ 双写最后一个字母的(此类动词极少)有：running , swimming , sitting , getting