1. have to/must

• have to和must的意思都是：必須

        I have to get up at 7.

        I don't have to get up at 7.

        You must come with me.

        You mustn't come with me.

• have to與must的區(qū)別：二者的區(qū)別非常微小，可以相互替代。如果一定要找出區(qū)別，那么have to更傾向于指因外部的要求而必須做的事情，must更多是指因內(nèi)部要求而必須做的事情。比如：I have to take my medicine twice a day.（每天吃兩次藥，來自醫(yī)生的要求）I must study hard.（好好學習，來自自己的要求）

• 當我們需要用過去式時，就必須要用have to的過去式had to，而不能用mustI had to be ready by the end of the day yesterday.

• must的過去式是must have，但must have的意思不是“必須”，而是對過去的一種猜測He must have read this book before.（他以前肯定讀過這本書）

2. 主語代詞/賓語代詞

• 在英語中代詞有主語代詞與賓語代詞之分

• 主語代詞：I, we, you, he, she, it, they

• 與主語代詞相對的賓語代詞是：me, us, you, him, her, it, themI do not like him.She is working with them.

• 做一做下面的練習：

• A: He / Him ’s a great basketball player. B: I don’t like he / him at all.

• A:  The children are tired. Can you put they / them to bed?B: Where are they / them?

• A: Where’s mum? I can’t see she / her.B: There she / her is!

• A:  We / Us can’t do this homework. Can you help we / us?B:  Daniel is good at Maths. Why don’t you ask he / him?

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劍橋KET語法全概括（1）一般現(xiàn)在時+頻率副詞

劍橋KET語法全概括（2）現(xiàn)在進行時+have got

劍橋KET語法全概括（3）可數(shù)與不可數(shù)名詞+many/much/a lot of/lots of/a few/a little

劍橋KET語法全概括（4）一般現(xiàn)在時與現(xiàn)在進行時的比較+too/enough

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