第四单元知识点(邓斯允的电子知识文件) 问句：What are you doing? 这个问句是问：你在干什么？ 而回答一定是：主语+be+动词ing形式 例：I am doing the dishes.(答案不唯一) 要学的单词有：draw pictures(drawing pictures) read a book(reading a book) answer the phone(answering the phone)do the dishes(doing the dishes)cook dinner(cooking dinner) 要点： 1． 一般现在时：表示经常性，习惯性发生的动作。句子中一般有often,usually,sometimes,always,on the weekend,on Sunday。（1）例：He/She/Amy/XXX is a teacher./I am a teacher./You are good students. 2． I like winter./I often do morning exercises at 8:00./They often climbs mountains on the weekend./He/She/Amy climbs mountains on the weekend. 3． 否定句 （1）is/am/are+not.例：He/She is a teacher. You are good students即等于：You are not good students.(2)行为动词：在动词前+do not或does not.例：I like winter. →I don’t like winter.They often fly kites. →They don’t often fly kites.He often climbs mountains. →He doesn’t often climbs mountains. 4.一般疑问句。（1）am、are 、is放在句子前面。例:You are good frends→Are you good frends?回答：Yes,we are./No,we aren’t.(2)行为动词一般疑问句：在句子前+Do……?/+Does……?例：They often climb mountains. →Do they often climb mountains?回答：Yes,they do./No,they don’t.He often climbs mountains. →Does he climb mountains?回答：Yes,he does./No,he does’t. 本文来源：https://www.wddqw.com/doc/5fe8042575c66137ee06eff9aef8941ea76e4b17.html