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2020Ӣ﷨Ѿ֮ǿͽṹƪ

Դй 2019-08-14

2020нȺ 867792818

йСĹ“2020 Ӣ ﷨ Ѿ”ѶϢҲο

һ۳ʶ

ǿҪʽ

1. ǿν

Eg1 I love you . —> I do love you . —> I did love you .

Eg2 Cell / Internet / computer brings us convenience .—> Cell / Internet / computer does bring us convenience .

2. ǿʽ

It is / was + ǿɷ +that / who + ɷ֡

a. дȷļ򵥾䡢о򸴺Ͼ䣬ȷĸɷ֡

b. ڱǿɷ(νͲ)it is / was that / who ɷֲ䣬Ҫʱ˳

ǿʽȥit is / was ... that / whoṹɷֲȱ

Eg1 My mother always encourages me not to lose heart when I have difficulties in study .

—> It is my mother who / that always encourages me not to lose heart when I have difficulties in study .

—> It is when I have difficulties in study that my mother always encourages me not to lose heart .

Thus , in the American economic system it is the demand of individual consumers , coupled with the desire of businessmen to maximize profits and the desire of individuals to maximize their incomes that together determine what shall be produced and how resources are used to produce it .

صʻcouple with ……;maximizev. ȡ……ֵﵽֵ

ο롿ˣľϵУߵͼ͸ЧõϣһʲôӦñ죬ԼԴαǡ   

ǸйΪ׼ݣϣԴа!Ϊ˰ ͬѧǸõĸϰйΪƳ꼯ѵڼѵѧְȿγ̣ϣͬѧǶ˳սԼԺУ࿼ж̬Ϣڸйж̬Ƶ

   ʡԺУб¼Ϣ

  ¼ȡʡУ2019о¼ȡ

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Ӣ70+߷ؼˢ6

2020Ӣܾͣ࿼5

2020ӢĶ⼼ɣͷ

2020ӢĶ⼼ɣС

 վṩݾԴṩѼɱվ༭оѧϰʹã漰ҵӯĿġ漰Ȩ⣬ϵվԱԸĻɾ

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һƪ2020Ӣ﷨Ѿ֮񶨾ͽṹƪ

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