Question

初三英语一道单项选择题，求解析

Old people must( )
A.be spoken to politely
B.speak to polite
C.be spoken politely
D.speak to politely

答案是什么？求解析~~~·

Answer 1

A

speak to sb 固定用法，变被动词语态时，TO 不能省略

追问

为什么to不能忽略啊？

追答

speak to sb 固定用法呀，变被动语态时sb已提前，但TO 还是不能省（SPEAK TO SB 中的SPEAK 是不及物动词）

Answer 2

speak to sb 是固定用法“对某人讲话”，这个句子如果用陈述语序说，就是：must speak to Old people politely 。politely 是 方式副词，放在动宾结构的后面。上面的主动句在考试中是见不到的，要把动宾结构中的宾语Old people 提到动词speak to 的前面，原来主动句的谓语must speak to 要响应宾语位置的变化，要变为被动语态must .be spoken to 。例如：We must look after the children well.中look after the children 是动宾结构，如果把宾语the children 提到句首作主语的话，谓语就要用被动语态must be looked after. 整个句子就成了The children must be looked after well.

Answer 3

A 被动语态