【英语】2019届二轮复习名词性从句专题连接词的运用（5页word版）

【英语】2019届二轮复习名词性从句专题连接词的运用（5页word版）

‎ 2019届二轮复习名词性从句专题连接词的运用 ‎1that的用法 ‎①主语从句、表语从句、同位语从句中用that但不能省略。‎ 例如：‎ That they are good at English is known to us all.‎ The problem is that we don’t have enough money.‎ She expressed the hope that they would come to China one day.‎ ‎②宾语从句中的连接词that有时可省有时又不可省，在以下几种情况中that不能省略：（A）当that从句和主句谓语动词之间有插入词语或者从句主语之间有插入语时，that不可省略；‎ ‎（B）当that 从句与另一名词性从句并列作宾语时，that不能省；‎ ‎（C）当that作介词宾语时，that不可省掉。例如：‎ He judged that, because he was a child, he did not understand wine.‎ Everyone knew what happened and that she was worried.‎ The reason lies in that she works harder than the others do.‎ ‎③that从句作主语和宾语时，可以用it 来替换成以下几种结构表达。‎ ‎(A)It is clear/certain/likely/true/surprising that… ‎ ‎（B）It is a pity/shame/good idea/no wonder that ...‎ ‎（C）It is said/reported/ believed/known/thought/suggested that … ‎ ‎（D）It seems/happens that。‎ 例如：‎ It happened that I went out last night.‎ It is said that China will win in the World Cup.‎ ‎④that和what的区别。‎ that 引导名词性从句时，在主从句中不以当任何句子成分，也没有任何含义；而what引导名词性从句时，在主从句中都要充当一定的句子成分，what可以分解成定语从句中的先行词 + 关系代词即常说的先行词 + that。‎ 例如：‎ It’s shame that he has made such a mistake. Do what he says.‎ ‎⑤同位语从句与定语从句中that的区别：‎ 同位语从句中的连词that只起连接作用，在从句中不担当任何句子成分；而定语从句中的关系代词that在句中做宾语或主语，宾语与先行词有修饰关系。‎ 如果句子是同位语从句，就应用连词that而不能用which.同位语从句一般放在表具体含义的名词后解释名词的含义或内容，‎ 如以下名词：news、fact、suggestion、truth、plan、belief、doubt、possibility、idea等，而定语从句只是对先行词的限定和修饰。‎ 例如：‎ They expressed the hope that they would come to visit China again.(同位语从句)‎ The hope she expressed is that they would come to visit China again.（定语从句）‎ ‎2whether和if的用法 ‎①whether和if在宾语从句中可以互换，但是作介词宾语时连接词一般用whether。‎ 例如：‎ It all depends on whether they will come back.‎ ‎②后面直接跟or not 时用whether。‎ 例如：‎ I didn’t know whether or not he had arrived in Wuhan.‎ ‎③主语从句表语从句中只能用whether。‎ 例如：‎ Whether the meeting will be put off has not been decided yet.‎ The question is whether they have so much money.‎ ‎④whether可以引导同位语从句，用以说明前面的名词的内容，if不能。‎ 例如：‎ We ought to discuss carefully the question whether we can do it or not.‎ ‎⑤whether常与or连用表示一种选择，if不能这样用；whether也可与动词不定式连用但if不能。‎ 例如：‎ The question of whether they are male or female is not important.‎ I have not decided whether to go or not.‎ ‎⑥间接引语位于句首时或者是间接引语提前时用whether不用if。‎ 例如：‎ Thank you, but whether I’ll be free I’m not sure at the moment.‎ ‎⑦whether可引导一个让步状语从句表示“不管”、“无论”，而if不能。‎ 例如：‎ Whether he comes or not, we will begin our party on time.‎ ‎3．疑问词 + ever和no matter + 疑问词的区别 ‎①疑问词 + ever可引导名词性从句，在主从句中要充当一定的部分。‎ 例如：‎ Whoever breaks the rule must be punished.‎ You can choose whatever you like in the shop.‎ ‎②疑问词 + ever还可引导让步状语从句。‎ 例如：‎ Whoever breaks the rule, he must be punished,‎ Whatever you do, you must do it well.‎ ‎③no matter + 疑问词只能引导让步状语从句。‎ 例如：‎ No matter what you do, you must do it well.‎ No matter who breaks the rule, he must be punished.‎ ‎4．when和where引导的同位语从句与定语从句的区别。‎ when 和where前面的名词若是表示时间、地点的名词，则when和where引导的是定语从句，否则则为同位语从句。如：‎ They put forward the question where they could get the money.‎ This is the place where the accident happened.‎ 名词性从句中主句和从句的时态一致 ‎（1）宾语从句中主句和从句的时态保持一致，但如果从句中表示提示的是客观现象，虽然主句是过去时态，从句仍用一般现在时。‎ 例如：‎ Hello,I didn’t know you were in London. How long have you been here?‎ The teacher told us that light travels at a very high speed.‎ ‎（2）主语从句作主语相当于单数第三人称作主语，谓语动词用单数，如果由and 连接两个或两个以上的主语从句作主语时，谓语动词用复数；由两个或多个连接词引导一个主语从句，谓语动词用单数。‎ 例如：‎ When the meeting will begin has not been decided yet.‎ When they will start and where they go have not been decided yet.‎ When and where the meeting will begin has not been decided.‎ 名词性从句的词序 名词性从句在句中要用陈述句语序。‎ 例如：‎ He asked me what was the matter with me.‎ We’ve heard the news that we’ll move into the new house.‎ Whatever you say will interest us all.‎