语法填空之从句练习(含答案)

语法填空之从句一、名词性从句1.正确分析句子成分是做对题的关键。

2.连接词的特点：that没有意义，在从句中只起连接作用，不充当句子成分；whether, if 表“是否”，在从句中只起连接作用，不充当句子成分；what, which, how, where, when, whatever等，有各自的意义，在从句中担任成分。

3. that 引导主语、表语、同位语从句时不省略；有多个that引导的宾语从句时，只有第一个that可省略；引导的宾语从句中含有从句时，也不省略。

4. 介词后一般不接that引导的宾语从句，此时需要用it作形式宾语；某些动词enjoy, hate, have, like, love, appreciate, take也不能接that引导的宾语从句，此时需要用it作形式宾语。

如：You may rely on it that he will come on time.5. reason做主语时，表语从句只能用that引导。

6.doubt 在肯定句中其后的宾语从句常用whether, if 引导；doubt在否定和疑问句中其后的宾语从句常用that 引导。

如：There is some doubt ___whether_______ he will come tomorrow.7. 与if相比较，whether 引导所有名词性从句，也可用于连接介词后的宾语从句，可以discuss, decide 后引导宾语从句，还可与or not 连用。

*考题检验1. __________ Barbara Jones offers to her fans is honesty and happiness.2. There is clear evidence ________ the most difficult feeling of all to interpret is bodily pain.3. World Aids day is also important in reminding us that HIV has not gone away, and _______ there are many things still to be done.4. News came from the school office _________ Wang Lin had been admitted to Beijing University.5. I was close to being killed the other day. A car passed me at ________ I thought was a dangerous speed.6. There is no doubt _________ John will support you.7. Could I speak to ________ is in charge of International Sales please?8. We have offered her the job, but I don’t know _________ she will accept it.9. Twenty students want to attend the class that aims to teach ________ to read fast.10. I am afraid he’s more of a talker than a doer, which is ________ he never finish anything.11. As far as I can see, there is no possibility ________ he will win the tennis match this time.12. American scientists have discovered that walnut trees can produce more than walnuts. The scientists say walnut trees also can make a chemical form of the popular pain-killing medicine aspirin. The trees do this under the stress of disease 1_________ other threats. Scientists say the chemical may help the trees reduce damage from dry weather, unseasonable temperature 2_______ other changes in the environment.The results are important 3__________ presence of the chemical could warn growers early 4_____ a tree is in danger. Growers could recognize a problem 5________ leaves on walnut trees die and fall off. The scientists say the 6________(find) also show that a plant can communicate with other plants through the atmosphere. For example, a tree could communicate 7_______ it is under attack from insects. 8_______ that information, a grower could begin corrective treatment.Researchers 9________(know) for a long time that laboratory plants may produce methyl salicylate, aspirin’s chemical form. Aspirin was first made from the bark covering on willow trees. 10_______ the researchers had never before found methyl salicylate in a forest. They have not confirmed that trees could emit, 11_______ give out, large amounts of the chemical into the atmosphere.答案：1,what 2. that 3. that 4. that 5. what 6.that 7. whoever 8. whether/if 9. how 10. why 11. that12(1. or 2. and 3, because/as/since 4. that 5. before 6. findings 7. when 8. With 9. have known 10. or 二、定语从句*做题指导1. 正确分析句子成分是做对题的关键。

2. 引导词的特点：*关系代词：which, that, who, whom, whose；关系副词when, where, why 和that。

（略）*that既指人又指物，先行词是everything, all等或有the first, the most, the very 等修饰时都能用，所以一般情况下用that引导定语从句比较保险，但以下情况不能用，切记：a. 在非限制性定语从句中（从句前面有逗号与主句隔开），用which或who, whom;b. 前面有介词时，用which 或whom;c. 前面的先行词是anyone, those 时，用who；*as 和which 可以引导非限制性定语从句，指代整个句子（which有时也仅仅指代主句的一个词和一部分）。

which引导的这种从句只能放在主句后，as 引导的这种从句可以放在主句前、后、或在中间插入。

另外，以下短语几乎成为固定搭配：as is often the case, as is known to all, as is hoped, as is natural, as is reported, as has been said, as we know。

如：__As_____ is announced in today’s newspapers, all the schools will reopen on Sept. 1st.*当先行词为case, situation, condition, point 时，且从句不缺少主要成分，用where引导；而出现occasion 常用when;* 关系副词where, when 有时用作关系代词；如：He climbed up to the top of the temple, from where he could see nothing but trees.* which 偶尔也指人，着重于该人的品质，地位，身份，而不是人本身。

如：Her sister has become a lawyer, which she wants to be.*比较：a. There are 20 people in the bus, most of ________ are boys.b. There are 20 people in the bus, most of ________boys.c. There are 20 people in the bus and most of _______ are boys.key: whom/ them/them* 比较：a. ______ is known to us all, the earth goes around the sun.b. ______ is known to us all is that the earth goes around the sun.c. ______ is known to us all that the earth goes around the sun. Key: As/ What/It*比较：a. He is one of the students who _____ (praise) by the teacher.b. He is the only one of the students who ______(praise) by the teacher. Key: were praised/was praised* 比较：a. Rose is such a kind girl ______ will surely give others help if possible.b. Rose is such a kind girl ______ she has won a high reputation in our class. Key:as/that考题检验1. There isn’t a moment ________ I’m not thinking of you.2. I hate the way _______ you never look at me when you speak to me.3. Thousands of Haitians cheered as the Chinese medical team arrived, many of _____ even cried with joy.4. She showed the visitors around the museum, the construction of ______ had taken more than three years.5. She has married again, _______ was unexpected.6. The Beatles, _____ many of you are old enough to remember, came from Liverpool.7. It is such a good place ______ everybody wants to go and visit ______ it is well known all over the world.8. The book was written in 1946, _______(during which/ since when) the education system has witnessed great change.9. One of the boys who _______(be) my friends ________(be) very good at English.10. Occasions are very rare _______ I have the time to spend a whole day with my kids.11. I will put the book _______ you placed it and make a mark at the place _______ can be easily seen.12. It is on the morning of May first _______ I met Liang at the airport.13. Influenza, or flu, is 1______ common infection of the nose and throat, and sometimes the lungs. The cause is a virus that passes from one person to another. The virus spreads through the air 2_______ an infected person expels air suddenly.Medical experts have identified three major kinds of influenza. They call them type A, B and C. Type C is 3_______(little) serious. People may not even know they have it. But researchers study the 4_______ two kinds very closely. Viruses change to survive. This can make 5______ difficult for the body to recognize and fight an infection.A person 6______has suffered one kind of flu develops the same kind again. The body’s defense system produces antibodies. These substances stay in the blood and destroy the virus 7_______ it appears again. 8_______ the body may not recognize a flu virus 9________ has even a small change.Each year, researchers develop vaccines(疫苗) to prevent the spread of the flu virus. The WHO holds meetings in 10_______ experts discuss 11________ kinds of flu viruses to include in the next vaccine.Key: 1. when 2. that 3. whom 4. which 5. which 6. which 7. as ; that 8. since when 9. are;is 10. when 11. where;where 12. that 13. (1. a 2. when 3. least 4. other 5. it 6. who 7. when 8. But 9. which/that10. which 11. what三、状语从句和连词*做题指导1. 熟悉状语从句的分类，熟悉每个连词的语义和语用特征，尤其是：as, since的灵活运用；before, until, unless, while, as, if, in case 这些难以区分的词。