四年级英语语法知识点
第⼀：单数的句⼦变成复数的句⼦
把单数的句⼦成复数的句⼦很简单：变法是把能变成复数的词变成复数，但a或an要把去掉。特殊疑问词、形容词、国家及地点通常不变。
把下列句⼦变成复数
1、I have a car we have cars
2、He is an American boy. They are American boys
3、It is a car They are cars
4、This is an eraser These are erasers
5、That is a backpsck Those are backpacks
6、I'm an English teather We are English teathers
7、It's a new shirt They are new shirts
8、He's a boy They are boys
9、She's a singer They are singers
10、What's this in English? What are these in English?
第⼆：就划线部分提问
就划线部分提问的变法：
1、先根据划线部分找到特殊疑问词。
2、再把没划线的部分变成⼀般疑问句的语序。
3、特殊疑问词通常有：what/ where/ who /whosc/ how/how old/ what colour/ what class /what grade/what row/
⼀般现在时的功能
1.表⽰事物或⼈物的特征、状态。如：The sky is blue.天空是蓝⾊的。
2.表⽰经常性或习惯性的动作。如：I get up at six every day.我每天六点起床。
3.表⽰客观现实。如：The earth goes around the sun.地球绕着太阳转。
