新概念第一册 语法重点复习Be动词的用法 Be动词的三种形态 1.am 用于第一人称 Eg. I am a student. 2.is用于第三人称(he,she,it) Eg.He is a boy. She is a girl. It is a dog 3.are用于第二人称以及其他人称复数(they,we) Eg. You are a student. They are students. We are students. Be Be 动词的缩写形式 动词的缩写形式 肯定形式的缩写 肯定形式的缩写 I am=Im She/he/it is= she/he/its They/we/you are=they/we/youre 否定形式的缩写 否定形式的缩写 I am not=Im not She/he/it is not=she/he/it isnt We/they/you are not =we/they/you arent一般疑问句 定义:能用yes或者no回答的疑问句。 一般把be动词提前,后面语序不变。 Eg. Are you a student? 肯定回答:Yes,I am