专题八名词性从句that, whether 与if 引导名词性从句的区别——考题尝试(单句语法填空)1．(2016·北京高考改编)The most pleasant thing of the rainy season is that one can be entirely free from dust.2．(2013·全国卷Ⅰ改编)I am wondering whether you can pick him up at the airport. 3．(2015·北京高考改编)I truly believe that beauty comes from within. 4．(2012·浙江高考改编)I made a promise to myself that this year, my first year in high school, would be different.——规则点拨当名词性从句主干齐全，又不缺少状语时，用连接词引导。
连接词有that, whether 和if 。
1．that: that 连接名词性从句，只起连接作用，不在从句中作成分。
在宾语从句中可以省略。
The teacher informed us (that ) we would have a test the next day. 老师告知我们第二天进行测试。
2．if 和whether ：有“是否”的含义，表示一般疑问。
主语从句和表语从句中只能用whether 不能用if 。
if 和whether 也不在从句中作成分，只起连接作用。
The trouble is whether he can come on time. 麻烦是他是否能按时来。
[注意事项]1．在下列情况下一般只能用whether ，不用if ： (1)引导主语从句并在句首时； (2)引导表语从句时；(3)引导从句作介词宾语时； (4)从句后有“or not”时； (5)后接动词不定式时。
2．that 引导主语从句时，常用it 作形式主语，常见句型有：(1)it ＋be ＋形容词(如： obvious, true, natural, surprising, good, wonderful, funny, possible, likely, certain, probable, evident, clear, apparent 等)＋that 从句。
(2)it ＋be ＋名词(如： no wonder, an honour, a good thing, a pity, no surprise 等)＋that 从句。
(3)it ＋be ＋过去分词(如： said, reported, thought, estimated, expected, decided, announced, arranged, recognized 等)＋that 从句。
类似句型还有：It cannot be denied that ... /It must be admitted that ...(4)it ＋动词(如：seem, appear, happen, occur to sb., doesn 't matter, make no difference 等)＋that 从句。
——对点演练(单句语法填空)1．That he will come to the conference has excited every one of us. 2．It 's no wonder that you 've achieved so much success. 3．It happened to me that I had been away when he called. 4．I feel it a pity that I haven 't been to the get-together.5．We all find it important that we (should) make a quick decision about this matter. 6．I am not interested in whether they believe in me or not.——考题尝试(单句语法填空) 1．(2014·福建高考改编)Pick yourself up. Courage is doing what you 're afraid to do. 2．(2014·浙江高考改编)“Every time you eat a sweet, drink green tea.” This is what my mother used to tell me.3．(2013·北京高考改编)I took pride in what I had done in the absence of my father. 4．(2013·全国卷Ⅱ改编)By the way, do you know what they stand for? 5．(2013·福建高考改编)Personally speaking, I don 't think what these parents do is helpful to their children.——规则点拨连接代词who, whom, whose, what, which这几个连接词不但起连接作用，也在从句中作名词或代词所作的成分，如主语、表语、宾语、定语。
缺少连接代词，从句不完整。
What struck me most in the movie was the father 's deep love for his son. 影片中最打动我的是父亲对他儿子深深的爱。
What worries us most is who let out the secret. 最令我们担忧的是谁泄漏了秘密。
——对点演练(单句语法填空)1．It has not been decided yet who will preside over the meeting.2．I 'd like to start my own business — that 's what I 'd do if I had the money. 3．(2017·太原五中一模)Who will come to help with my English hasn 't been decided. 4. (2014·湖南高考改编)As John Lennon once said, life is what happens to you while you are busy making other plans.5．(2014·山东高考改编)It is difficult for us to imagine what life was like for slaves in the ancient world.——考题尝试(单句语法填空) 1．(2015·北京高考改编)How we understand things has a lot to do with what we feel. 2．(2015·福建高考改编)—I wonder how Mary has kept her figure after all these years. —By working out every day. 3．(2015·湖南高考改编)You have to know where you 're going if you are to plan the best way of getting there.4．(2015·重庆高考改编)We must find out when Karl is coming, so we can book a room for him. 5．(2014·广东高考改编)I didn 't understand why this would happen and ...2 / 4——规则点拨连接副词when, where, why, how这几个连接词不但起连接作用，也在从句中作状语，表示时间、地点、原因和方式。
He didn 't tell me when we would meet again. 他没告诉我什么时候我们再相见。
Go and get your coat. It 's where you left it. 去把大衣拿来。
就在你原来放的地方。
I have no idea how I can get to the railway station. 我不知道怎么能到火车站。
That 's why I want you to work there. 那就是我要你在那儿工作的原因。
——对点演练(单句语法填空) 1．(2017·大庆质量检测二)People who visited me used to ask me how I could sleep. “Doesn 't the sound of the traffic bother you? How can you get used to so much noise ？”2．The problem is how we can improve our reading skills in such a short time. 3．She asked a question why there was a delay. 4．(2017·湖南岳阳一中检测)Mr. White is opposed to repairing the old building, and that 's where Idon't agree.whatever, whoever, whichever, whenever, wherever, however ——考题尝试(单句语法填空)1．(2016·北京高考改编)Your support is important to our work. Whatever you can do helps. 2．(2013·江西高考改编)Whichever one of you breaks the window will have to pay for it. 3．(2014·北京高考改编)Some people believe whatever has happened before or is happening now will repeat itself in the future.——规则点拨它们的作用等同于who, what, which, where, when, how, 但语气加强了。