9.The furniture is covered in dust (灰尘) because there is no one living in the house for a long time.
10.I prefer the second theory to the first one，but I have no enough evidence (根据；证明) to prove it. Ⅱ.词性变化练习
1.He still feels frightened when he thinks of the frightening scene that he experienced last week.(frighten)
2.It is always acknowledged that our parents are always concerned (concern) about us wherever we are and however old we are.
3.Linda always takes a knife as a protection (protect) when she goes out at night. 4.It is our duty that everyone should try hard to fight against a variety of pollution (pollute).
5.He has a good habit of doing morning exercise every day to build up his strength (strengthen).
6.It is absolutely (absolute) necessary for you to give us clear explanation for your resignation.
7.Please pay attention to these dangerous chemicals (chemistry) when you are doing the experiment.
8.The majority (major) of them take an online language test before starting their programme. Ⅲ.选词填空
in a nutshell，be caught in，take in，have an effect on，give out，cut down，look through，one after another 1.This kind of flower can give_out an attractive smell，which makes us relaxed and happy.
2.To our disappointment，we were late for the World Cup final as we were_caught_in the traffic jam.
3.The rainforest is being cut_down at high speeds and it may disappear from the earth one day.
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4.I spent the whole night taking_in what you had told me before.
5.There is the bell for the end of the lesson and the students come out of the classroom one_after_another.
6.The education I gained when I was young surely had_an_effect_on my life later. 7.In_a_nutshell，it needs seven steps before we come to a scientific conclusion. 8.My time was limited and I just looked_through my notes before the examination. Ⅳ.完成句子
1.There were so_many_kinds_of_animals_that I couldn’t believe my eyes. 那里有很多种动物，以至于我不能相信自己的眼睛。
2.The Internet makes_it_easier_for_people_to_get the information they want. 互联网使得人们可以更容易地获取他们所需要的信息。
3.If_possible，I will visit my uncle when I go to Shanghai on business. 如果可能的话，我出差去上海时会探望我叔叔。 4.To_sweep_the_floor is my duty every day. 清扫地板是我每天的工作。
5.Don’t try to hide anything from your mother.She appears_to_have_been_told everything.
不要试图向你的母亲隐瞒什么。她好像已经被告知了一切。
核心要点突破
1.strength n.力量；力气；长处；优势；强度 (1)have the strength to do sth 有力量/意志做某事 build up one’s strength 增强体力 strengths and weaknesses 优势和劣势 with all one’s strength 用全力 (2)strong adj. 坚强的；强壮的；强烈的 strengthen vt. 加强；巩固 单句语法填空
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①To avoid knee pain，you can run on soft surfaces，do exercises to strengthen (strength) your leg muscles (肌肉)，avoid hills and get good running shoes.
(2018·全国卷Ⅰ语法填空)
②The driver bore down with all his strength to control the car when the wheel slipped.
[佳句背诵] Summer makes me full of energy and I feel I have the strength to do the most difficult things in my life.(2016·四川高考书面表达) 夏天使我精力充沛，我觉得我有力量做生活中最困难的事情。 2.concerned adj.关心的；担心的；有关的 (1)be concerned with... 与……有关，涉及 be concerned about/for... 关心/担心…… be concerned that... 担心 as far as...be concerned 就……而言/来说 (2)concern n.& v.关心；担心 show/express one’s concern about/for 对……表示关心/担心 (3)concerning prep. 关于 单句语法填空
①As we all know，parents focus their attention on their children’s study，because it is concerned with their future.
②Concerning the toll free policy on the express way，what concerns us most is the traffic jams while some are concerned about the safety.(concern) [佳句背诵] As far as I’m concerned，every summer I stay at my uncle’s house in the country for three weeks and enjoy a wonderful life there.(2016·四川高考书面表达)
就我而言，每年夏天我会有三周的时间待在乡下叔叔的家中，过着非常舒心的日子。 [名师指津] concerned 用作形容词时，意为“担忧的；关心的”；用作后置定语时，意为“相关的；有关的”。另外concerning 用作介词时，意为“关于；对于”。 3.urgent adj.紧急的；迫切的
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(1)in urgent need of 急需 (2)urge vt. 催促；极力主张 n. 冲动；强烈的愿望；迫切的要求 urge sb to do sth/into doing sth力劝/敦促某人做某事 urge that... 强烈要求；极力主张[从句谓语动词用(should＋)动词原形] (3)urgency n. 紧急；紧急情况 urgently adv. 急需地 单句语法填空
①We should urge the workers to_get (get) these goods ready immediately. ②The public urged that the government (should)_take (take) measures to prevent such cases from happening again.
[佳句背诵] The people in the earthquake－stricken area are in urgent need of food，medicine and shelters.
地震灾区的人们急需食品、药品和住的地方。 4.complain v.抱怨；发牢骚；投诉
(1)complain (to sb) of/about (doing) sth (向某人)投诉/抱怨(做)某事；(向某人)发牢骚 complain (to sb) that... (向某人)抱怨…… (2)complaint n. 抱怨；投诉；控告 make a complaint about/of sth 抱怨/投诉某事 make a complaint to sb 向某人抱怨/投诉 单句语法填空/句型转换
①Several passengers complained to the air company about the bad service on the flight.
②One of my friends complained to the manager about the service of the waiter. →One of my friends made_a_complaint_to_the_manager_about the service of the waiter.
[佳句背诵] We should strictly and voluntarily follow traffic rules，stopping at
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