四年级上册英语重点语法知识总结

四年级上册英语重点语法知识总结


简介:
一、be动词的用法 口诀:be动词是个妈,生了三个娃:am is are 1.我(I)用am,你(you)用 are,is连着他(he)/她(she)/它(it) I am a student. (主语是I,be动词用am) You are a teacher.(主语是You,be动词用are) He is a cook.(主语是He,be动词用is) She is a doctor.(主语是She,be动词用is) It is a dog.(主语是It,be动词用is) 2.单数、不可数名词用is,复数名词全用are The dog is cute.(The dog是单数,be动词用is) The water is clean. (The water不可数,be 动词用is) These apples are red.(These apples是复数,be 动词用are) 3.变疑问句,作前提,句