例1:I have a pen. I have a pen. have用于除第三人称单数外的人称实义动词,变否定句不能在have后加not,则需要助动词来帮助解决.do+not= don’t. 例2:My father has a watch. My father doesn't have a watch. has 用于第三人称单数外的人称实义动词,变否定句不能在has后加not,则需要助动词来帮助解决.does+not=doesn't 注:变第三人称单数是,要注意动词部分的还原.
一种是助动词do 例子: (1) I have an apple. 否定句:I do not have an apple. (2) He has an apple. 否定句:He does not have an apple. 另一种是直接在have后面加not 例子: (1) I have go to Wuhan. 否定句:I have not g...