人教版英语七年级上册课文知识点精编版(18)

They don’t need our help. 他们不需要我们帮助。
Jim’s bike is broken. He needs to buy a new one. 吉姆的自行车坏了，他需要买辆新的。
②need做情态动词时长用于否定句和疑问句中，意为“需要，必要”，后接动词原形，此时need无人称和数的变化，可以直接加not构成否定句，也可直接提到句首变为一般疑问句。
You needn’t worry about that. 你不必为此担心。
Need we finish the work before Saturday?我们有必要周六前完成工作吗？
5.come的用法：做不及物动词时，意为“来，来到”，后接动词不定式做状语，即come to do sth来做某事。 come的反义词是go，后接地点名词时，需加介词to；后接地点副词时，则要省略介词to。
例： He comes to school early every day. 他每天很早来上学。（school是地点名词）
Please come here before 10:00. 请10点前来这儿。(here是地点副词)
6.buy的用法：做及物动词，意为“买，购买”，后接名词或代词做宾语。
I want to buy some apples.我想买点苹果。
buy后接双宾语，即用于buy sb sth或buy sth for sb结构，意为“给某人买某物”
My mother buys me new clothes every year. ＝ My mother buys new clothes for me every year.
我妈妈每年给我买新衣服。
7.sell的用法：sell及物动词，意为“出售；销售；卖”固定搭配：
sell sb sth ＝ sell sth to sb 意为“卖某物给某人”
They are going to sell me their books.＝They are going to sell their books to me.
他们打算把他们的书卖给我。
Unit 8 Whenis your birthday?