新高考英语语法单词类讲义cover语法知识点整理总结
英语语法：cover
英语中40%以上的单词都有至少两个以上词义。一词多义（Polysemy ）现象，主要来自于以下变化途径：
1. 广义化和狭义化
2. 褒义化和贬义化
3. 隐喻和转借
4. 词义减少
比较Cover的多个不同词义，可以多少看出一些奥妙。
1. 覆盖： to put one thing over another, in order to protect or hide it
Cover the food until you are ready to eat it.
They covered her with a blanket.
His clothes were covered in mud.

All the furniture was covered with dust.

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2. 论述、涉及：to include and deal witha particular situation, subject, period of history, etc
Section 5 covers holiday allowances for part-time workers.
Her new book covers the period from 1870 to 1918.
The programme covers all aspects of health and safety at work.
4.法律、规则适用于（a law, rule, or contract  covers  a particular situation, type of person etc, it includes or deals with that situation or person）
The rights of unmarried◇◇hers are not covered by this legislation.
5.新闻报道的内容包含：to give a report or description of an event on television or radio, or in a newspaper
We will be covering the game live on Saturday afternoon.
Clare Gray covered the Paris fashion shows for The Times.
6.负担、支付：to have enough money to pay for something
We need £1,000a month to cover the rent.
The warranty does not cover damage caused by misuse of the product.
7.走完了行程：to travel a particular distance
We had to cover the last three miles on foot.
8.掩护：to protect someone from attack by pointing a gun at someone who might shoot them
His partner covered him while he ran across the prison yard.
9.对…瞄准：aim or target the gun at
The police man covered the robber with a pistol.
10.负责(某个地区)：be in charge of a certain area
Our salesman covers the west coast.
11.代替(某人)：substitute for someone to perform his/her duty
Will you cover for me at the telephone switchboard while I run out to post a letter?

实践与辨析: that; whether; what; how; why; if
1.      What doesn’t matter is ______she will join in our activity or not. We have enough members.
2.      How much one enjoys himself travelling depends largely on who he goes with, ____ his friends or relatives. 
3.      Cindy shut the door heavily and burst into tears. No one in the office knew___ she was so angry.
4.      Scientists study _____ human brains work to make computers.
5.      It is uncertain _____ side effect the medicine will bring about, although about two thousand patients have taken it. 
6.      Evidence has been found through years of study______ children’s early sleeping problem is likely to continue when they grow up.
7.      ___ the football game will beheld on time largely depends on the weather.
8.      Many people in the city wonder_____the city officials have the information they need to solve the problem. 
9.      The guide warned the tourists not to get off the bus because he was fearful ______ some wild animals might hurt them.
10.  The fact that a planet exists outside our solar system encourages hope _____ other solar systems exist. 
11.  It is still under discussion___ the old bus station should be replaced with a modern hotel or not.
12.  It doesn't matter ___ you turn left or right at the crossing---both roads lead to the park.
13.  Everyone in the village is very friendly. It doesn't matter ____ you have lived there for a short or a longtime.
14.  One’s life has value ___ one brings value to the life of others.
15.  We all need knowledge from the past — ______ it comes from personal experience or from studying history.
 
(keys: 1. whether;  2. whether;  3. why;       4. how   5. what
    6. that      7. whether   8. whether/if   9. that  10. that
    11. whether  12. whether  13. whether  14. if    15. whether)