问句 肯定回答 否定回答Need you…? Yes, I must. No, I needn't/don't have to.Must you…? ... [查看全文]
1) 构成will / be going to do sth.2) 概念 a. 状态完成:表示某事继续到将来某一时为止一直有的状态。b. 动作完成:表示将来某... [查看全文]
动词加小品构成的起动词作用的短语叫短语动词(Phrasal Verb)。例如:Turn off the radio. 把收音机关上。(turn off是短语动词)短... [查看全文]
1)作主语Fighting broke out between the South and the North.南方与北方开战了。2)作宾语 a. 动词后加动名词doing作宾语 V.... [查看全文]
1) The Sahara is the biggest desert in the world.形容词最高级前通常必须用定冠词 the,副词最高级前可不用。形容词most前面... [查看全文]
物主代词不可与 a, an, this, that, these, those, some, any, several, no, each, every, such, another, which等词一起前... [查看全文]
现在进行时的基本用法a. 表示现在( 指说话人说话时) 正在发生的事情。We are waiting for you.b. 习惯进行:表示长期的或重复性的... [查看全文]
1) It is demanded / necessary / a pity + that…结构中的主语从句的谓语动词要用should 加动词原形, should 可省略(1)sug... [查看全文]
关系副词可代替的先行词是时间、地点或理由的名词,在从句中作状语。1)when, where, why关系副词when, where, why的含义相当于"介词+... [查看全文]
1)物质名词a. 当物质名词转化为个体名词时。比较: Cake is a kind of food. 蛋糕是一种食物。 (不可数)These cakes are swee... [查看全文]