We decided that we would help him.
→We decided to help him.

方法二：当主句谓语动词是know， learn， remember， forget， tell等动词，
且主句主语与从句主语一致时，宾语从句可简化为“疑问词+不定式”结构。例如：
She has forgotten how she can open the window.
→She has forgotten how to open the window.
注：当主句谓语动词是tell， ask， show， teach等动词，
且后带双宾语，从句主语和间接宾语一致时，宾语从句可简化为“疑问词+不定式”结构。例如：
Could you tell me how I can get to the station？
→Could you tell me how to get to the station？

方法三：当主句的谓语动词是order（命令），require（需要）等时，
如果主句和从句的主语不一致，宾语从句可简化为“名词（代词）+不定式”结构。例如：
The headmaster ordered that we should start at once.
→ The headmaster ordered us to start at once.

方法四：某些动词后的宾语从句，可以用介词加动名词（短语）等其他形式简化。例如：
He insisted that he should go with us.
→He insisted on going with us.
The poor boy doesn’t know when and where he was born.
→The poor boy doesn’t know the time and the place of his birth.

方法五：某些动词后面的宾语从句可转化为“宾语+V-ing形式（作宾语补足语）”结构。例如：
Liu Ping found that there was a wallet lying on the ground.
→ Liu Ping found a wallet lying on the ground.

方法六：动词seem后的宾语从句，也可以用不定式（短语）来简化，但句型需要进行适当的变化。例如：
It seemed that the boys were going to win.
→The boys seemed to win.
除上述方法外，还有一些特殊句式的转化。例如：
I found that it was difficult to learn English well.
→I found it difficult to learn English well.
Soon we found that the ground was covered with thick snow.
→Soon we found the ground covered with thick snow.
They found that the box was very heavy.
→They found the box very heavy

 

考点名称：疑问词组

• 疑问词组:
  即使由疑问词和一些词一起构成的表示疑问的词组。由how/what与另外一个词组成的词组。
  例如：
  how many (后接可数名词，多少), how much (后接不可数名词，多少), 
  how often (表示频率), what if (如果…将会怎么样), 
  what about (…怎么样), what time (几点)

• 与how搭配的疑问词组：
  How在英语中通常用作副词，是特殊疑问句中本领最大的疑问词。他与其它形容词或副词搭配组成疑问词组
  1．How old问年龄、年代。
  How old is your friend? 你朋友多大了？
  How old is the bridge? 这座桥有多少年代了？
  2．How many问可数名词数量。常将可数名词复数紧随其后。如：
  How many pictures are there on the wall? 墙上有多少幅画？
  How many glasses of milk would you like? 你们想要几杯牛奶？
  3．How much询问不可数名词的数量、物品的价格。
  How much money is there in the purse? 钱包里有多少钱？
  How much are the apples at the moment? 目前苹果什么价钱？
  4．How long提问物体的长度、时间的长短。
  How long is the Changjia River? 长江有多长？
  How long does it take you to do your homework every day?
  你每天花多长时间做作业？
  5．How soon 对 “in+一段时间 ”提问， 表示“多久之后”。
  How soon will you be back? 你多久后回来？
  6．How often对表示频率的副词或短语提问。
  How often does Mrs. Green go shopping? 格林夫人多久去购一次物？
  7．How about用来征求对方意见。
  Your father is a worker, how about your mother? 你父亲是工人，你母亲呢？
  How about playing games after school this afternoon? 下午放学后做游戏怎么样？
  8．How far 问两地间的距离How tall问人（树）的高度；how heavy问重量；how wide问宽；how high可以询问建筑物、山峰高度。
  How far is it from the earth to the moon? 从地球到月球有多远？
  How tall is Yao Ming? 姚明身高多少？
  How heavy is that big box? 那只大箱子有多重？
  How wide is the new street? 这条新街有多宽？
  How high is the tower in Paris? 巴黎的那座塔有多高？
  
  与what搭配的疑问词组:
  

  疑问词	意思	用法	例句
  what	什么	用来问是什么，叫什么，做什么等	1. What’s your name? 你叫什么名字？ 2.What’s your father? 你爸爸是干什么的？ 3.what is in your box? 你的盒子里是什么？
  what time	什么时间	用来问时间	1.What time is it?  几点了？ 2.What time is it now? 现在几点了？
  what colour	什么颜色	用来问颜色	1.waht colour is your bag? 你的书包是什么颜色？ 2.what colour is your book? 你的书本是什么颜色？
  what about	怎么样	用来征求意见或询问感受等， 大多用于承接上面的同样问题	1.what bout this pair of shoes?这双鞋子怎么样？ 2.what about you? 你呢？ 3.what about your dad? 你爸爸呢？
  what day	星期几	用来问星期几	1.what day is it today? 今天星期几？ 2. what day was yesterday? 昨天星期几？
  what date	什么日期	问具体的日期	1．What’s the date today? 今天是几号？ 2. what date is tomorrow? 明天是几号？
  what...for...	为何目的	用来问目的，在一定情况下只可以与why互换	What did you buy that for? 你为什么要买那个？