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.
英语3500词汇表电子版2. 论述、涉及：to include and deal witha particular situation, subject, period of history, etcSection 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 fathers 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 newspaperWe 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 somethingWe 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 distanceWe 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 themHis partner covered him while he ran across the prison yard.9.对…瞄准：aim or target the gun atThe police man covered the robber with a pistol.10.负责(某个地区)：be in charge of a certain areaOur salesman covers the west coast.11.代替(某人)：substitute for someone to perform his/her dutyWill 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; if1. 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)