一、can的用法can 是情态动词,表示有能力、会做can其后要跟动词原形,并且can没有时态和人称的变化,我来为大家讲解一下关于上海版牛津英语四年级下册知识点?跟着小编一起来看一看吧!
上海版牛津英语四年级下册知识点
一、can的用法
can 是情态动词,表示有能力、会做。can其后要跟动词原形,并且can没有时态和人称的变化。
例如:
I can play ball.
She can draw.
二、have和has的用法
have用于第一人称、第二人称和第三人称复数。
has用于第三人称单数。
例如:
I have a book.
She has a book.
三、some和any
some表示“一些、几个”,常用于肯定句中。将肯定句转变为疑问句或否定句时,需将some转变为any。但在询问别人是否需要某些东西时,还是使用some,不需要要将some改为any。
any表示“任何一个、任何一些”,一般用于疑问句或否定句中。
例如:
I have some milk.
I don't have any milk.
Do you need some milk?
四、's和s'的区别
's表示是某个人、某个单个个体所有的。
s'表示某些人、某个群体所有的。
This is the teacher's office.
This is the teachers' office.
This is a student's book.
This is the students' book.
五、many和much的使用
many修饰可数名词复数,much修饰不可数名词复数。
例如:
How many pens do you have?
How much milk do you have?
六、介绍位置关系
between, in front of, behind, at , next
七、对于价格的提问和回答
How much are they? / How much isit?
They are ...
It is ...
八、以Don't开头的否定祈使句,表示不要做某事,注意没有人称的变化
例如:
Tom, don't walk on the grass.
Don't play with fire, children.
九、询问别人的职业
句型一:What do/does sb. do?
例如:
What do you do?
What does Tom do?
What dose your mother do?
我们要注意,当主语是三单时,助动词要用does。
句型二:What is/are sb.
What are you?
What is Tom?
What is your father?
句型三:What is sb. job?
What is your job?
What is Tom’s job?
What is your father job?
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