精选优质文档-倾情为你奉上主题： Sentences 句法-否定句 II. How to use用法：肯定句变否定句第一类：含有is, am, are的句子，直接在is, am, are后面加 not, 主语 + be （am is are）+ not （I am not= Im not is not=isnt are not=arent）例如：I am Jack. - I am not Jack.Im not Jack. She is a doctor. - She is not a doctor. It is a sunny day. - It is not a sunny day.连接：课堂练习一讲解第二类：含can 的情态动词的句子, 在can 后面直接加 not， can not= cant。例如：The bird can fly. -The bird can not fly. I can dance _ I can not da
