1、由and连接两个并列主语 其后的谓语动词一般用复数形式。但如果两个单数名词指同一个人、同一事物、单一概念时,谓语动词要用单数,如:a knife and fork ;a cart and horse;the bread and butter;the needle and thread;a cup and saucer;my house and home;cause and...
Do you know if /whether Cathy goes to school early? 注意:只能用whether而不用if的三种情况如下: ①与or not连用:They asked us whether or not we were coming. ②在介词之后:It depends on whether it is going to rain. 3.在不定式之前:We haven’t decided whe...
1. I'll see whether or not I can persuade him to accept it. 我会试试看能不能说服他接受这一点。 2. He seriously debated whether or not he should charge his tenants extra for the water. 他认真地考虑该不该向房客们收取额外的水费。 3. He could not decid...
先看下面两个句子: 第一个:It is a question. 第二个:The discussion is whether the book is worth reading. 这两个句子放在一起比较,我们发现,第一句话很简单,就是一个“主语+系动词+表语”的结构。而第二句话是be动词之后出现了一个句子:whether the book is worth...
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