有些动词(主要是"授予动词")后面需要或可以接双宾语结构，如：give, write, buy, send, make等
You may send him an E-mail or write him a letter.
这个句子也可使用以下结构：
You may send an E-mail (to him) or write a letter to him. 所以 "to" 和 "for" 是连接双宾语结构的重要介词。
该句型的重点是要记住以下短语，特别是所用的介词：
to cure … of(治愈…)
to accuse …of(谴责…)
to convince… of(说服…)
to inform… of(通知…)
to notify… of (通知…)
to clean… of (清除…)
to warn…… of / against (警告…)
to cheat… of(欺骗)
to rob… of(抢劫…)
例如：
We have to inform the family of the patient's condition as soon as possible. / Have the family been informed of the patient's condition? (我们得尽快将病人的病情通知其家属。/ 已经将病人的病情通知其家人了吗?)
注意下面句子的结构变化：
May I ask you a question? → May I ask a question of you?
直接和间接宾语的位置与上面短语有何不同?
(五)第五句型：主语 + 及物动词 + 宾语 + 宾语补足语
先回顾一下本讲第一节中有关宾语和宾语补足语的概念。
这个句型也是考试的重点，主要有三个难点：
1) 要不要 "to"的问题：
The director wants you to come right now. (主任要你马上就来。)
句中to come 是宾语you的补足语。也就是说，当宾语补足语是动词时，一般要用 "to"连接。但是，以下情况例外：
n make, let, have等使役动词，如：
Shall I have him come here?(要我叫他来吗?)
I won't have him cheat me. (否定式，表示"容许"：我决不容许他欺骗我)
上述句型变为被动语态时，一般要加 "to"，如：
The nurse made the patient eat something. (护士让病人吃了点东西。)
→The patient was made to eat something.
有时，宾语补足语也可用 -ing形式，如：
His joke made us laughing for a couple of minutes. (他的笑话使我们笑了几分钟。- 注意后面的时间状语for a couple of minutes)
记住下面重要表达方式：
to have / get (something) done， 如：
I am going to have (get) my watch repaired.(我去修一下表。)
n see, hear, notice, observe, watch, look at, listen to 等感觉动词：
使用原则与上述大致相同。
2) 要不要 "it"的问题:
先看两个句子：
We sometimes find it difficult to get rid of a bad habit. (有时我们发现要改掉一个坏习惯很难。)该句的原始结构可理解为：We sometimes find (to get rid of a bad habit) difficult. 括号部分(动词不定式)为宾语，difficult为宾语补足语
The doctor has made it clear to you that there is nothing wrong with your stomach.(医生已经跟你说得很清楚了，你的胃没有什么问题。)该句的原始结构可理解为：The doctor has made (there is nothing wrong with your stomach)clear. 括号部分(句子)为宾语，clear为宾语补足语
归纳：
n 在主语 + 宾语 + 宾语补足语结构中，当宾语是"动词不定式"或"句子"时，要用it(不是this, that或其他任何词)作形式宾语，将动词不定式或句子移到句子的后面去。
n 考试时，判断要不要 "it"，主要看句子后面有没有"动词不定式"或"句子"，若有，要选 "it"
n 宾语、宾语补足语倒装：当宾语(名词)较长，宾语补足语较短(往往是1个形容词，如possible, impossible, difficult, easy, clear等)时，为了句子结构均衡，往往采用倒装，这里不存在"it"的使用问题, 对下句作出判断：
The development of ultrasound has made ______ early diagnosis of some fatal diseases. (超声波的出现使许多致命疾病的早期诊断成为可能。)
A. it possible
B. possible
C. it is
D. it
该题的正确答案应为B，因为句子采用了倒装形式，原结构为：
The development of ultrasound has made [early diagnosis of some fatal diseases] possible.
宾语 补足语
3) 记住以下短语：
to take…as(把…当作…)
to think of…as(把…看作…)
to regard…as(把…看作…)
to refer to…as(把…叫作…)
关于五个基本句型，重点要掌握每个句型的出题点，举一反三。
