主从时态要一致，陈述语序永不变。
陈述请你选that，疑问需用if/whether连。
特殊问句作宾从，原来问词不用换。
三关过后莫得意，人称、标点需注意。
留意变脸的if/when，从句的简化记心间。
【歌诀解码】
一、三姊妹
宾语从句根据引导词的不同可分为三种类型：
1. 由that引导的宾语从句。如
We knew（that）we should learn from each other.
2. 由if/whether引导的宾语从句。如
Please tell me if/whether you have been to America.
3. 由who，where，how等连接代词或连接副词引导的宾语从句。如：
Can you tell me how I can get to the nearest post office? 二、三关
1. 引导词关
如果从句是陈述句，引导词用that（that在口语或非正式文体中常省略）；如果从句是一般疑问句，引导词用if/whether；如果从句是特殊疑问句，引导词用由疑问词转换而来的疑问代词/副词。
2. 语序关
①陈述句变为宾语从句，语序不变，即仍用陈述语序。如：
He is an honest boy. The teacher said. →The teacher said（that）he was an honest boy.
②一般疑问句和特殊疑问句变为宾语从句，语序变为陈述语序。如：
Does he work hard? I wonder. →I wonder if/whether he works hard.
When did he leave? I don’t know. →I don’t know when he left.
3. 时态关
①如果主句是现在的时态，从句的时态可根据实际情况而定。如：
I have heard（that）he will come back next week.
②如果主句是过去的某种时态，那么从句的时态一定要用过去的某种时态。如：
He said（that）there were no classes yesterday.
注意：如果宾语从句表述的是客观真理、自然现象等时，不管主句是什么时态，从句都要用一般现在时。如：
He said that light travels much faster than sound. 三、人称的变化和标点的使用
1. 从句的主语如果是第一人称，变为宾语从句则与主句的主语一致；如果是第二人称，则与主句的宾语一致；如果是第三人称，不用变化。如：
“May I use your knife?” He asked me. →He asked me if he might use my knife.
“Do you know her telephone number?” He asked me.
→He asked me if I know her telephone number.
2. 宾语从句的标点均由主句决定。主句是陈述句，用句号；主句是疑问句，用问号。如：
Who will give us a talk? I don’t know. →I don’t know who will give us a talk.
Do you know? Where does he live? →Do you know where he lives? 四、两副面孔
if和when既能引导时间状语从句，又能引导宾语从句。因此，遇到它们就要认真分析一下，它们究竟属于“两副面孔”的哪一副。如：
If it rains tomorrow, I won’t come.（时间状语从句）
I don’t know if it will rain tomorrow. （宾语从句） 五、从句的简化
1. 当主句谓语动词是find，see，watch，hear等感官动词时，从句常简化为“宾语＋宾补”结构，宾补为不带to的不定式或V-ing形式。如：
She found that the wallet was lying on the ground.
→She found the wallet lying on the ground.
2. 当主句谓语动词是hope，wish，decide，forget，plan，agree等，且主句主语与从句主语相同时，从句可简化为不定式结构。如：
She agreed that she could help me with my maths. →She agreed to help me with my maths.
3. 在连接代词/副词引导的宾语从句中，当从句主语与主句主语或间接宾语一致时，宾语从句可简化为“连接代词/副词＋不定式”结构。如：
Can you tell me how I can get to the station? →Can you tell me how to get to the station?
【中考范例】
1. Miss Green didn’t tell us _______ in 2002.
A. where does she live B. Where she lives
C. where did she live D. where she lived （北京市中考试题）
【解析】答案：D。该题考查的是宾语从句的语序和时态。宾语从句应用陈述句的语序和时态，所以应选D。
2. Would you please tell me ________? （上海市徐汇区中考试题）
A. when did he come home B. where he would play football
C. if he had seen the film D. why he didn’t watch the game
【解析】答案：D。该题考查的是宾语从句的语序和时态。主句用的实际上是现在时，宾语从句在这个句子里应用陈述句的语序和一般过去时。
3. I don’t know when __________.
A. will the train leave B. the train will leave
C. would the train leave D. the train leave （哈尔滨市中考试题）
(完整)2018初中宾语从句练习题及答案
