3.倍数句型。 (1)A is+倍数+比较级+than+B (2)A is+倍数+as+原级+as+B (3)A is+倍数+the+名词(size,length,height等)+of+B (4)A is+倍数+that/those of+B (5)A is+倍数+what引导的名词性从句 ♦ It is reported that the United States consumes four times as much energy as the whole of Africa.据报道,美国消耗的能源是整个非洲的四倍。 ♦ The geography teacher tells us that China has almost the same size as the USA but its population is six times as large as/the size of that of the USA.地理老师告诉我们,中国在面积上与美国几乎一样大,但是人口却是美国的六倍。 ♦ The output of this year is three times that of 2015.=The output of this year is three times what it was in 2015.今年的产量是2015年的三倍。 [即时训练] Ⅰ.单句语法填空 1.It may not be a great suggestion.But before a ____________(good)one is put forward,we’ll make do with it. 解析:句意:它或许不是一个好建议,但在有更好的建议之前,我们先凑合一下。此处暗含比较,表示“一条更好的建议”。 better 2.(2016·安徽江南十校联考改编)—I watched the film you mentioned. —Isn’t it cool? —Absolutely.It can’t be much ____________(good). 解析:句意:——我看你提及的那部电影了。——你不觉得很棒吗?——绝对是,没有比这更好的了。本题考查“否定词+比较级”表示最高级。也可根据设空处前有much修饰可知,应用形容词的比较级形式。 better 3.Tom does very well in computer study and much to my joy,Jane does no ____________ (bad) than Tom. 解析:句意:汤姆的计算机学得很好,使我高兴的是,简做得和他一样好。“no+比较级+than”是固定搭配,意为“和……一样不”。本句中有no,所以填worse成为双重否定,意为“和……一样好”。 worse Ⅱ.单句改错 1.It’s said that the power plant is now twice much large as what it was. ____________________________________________________ 解析:本题考查倍数表达法。 句意:据说这个发电厂现在是以前的两倍大。根据倍数表达法:A is+倍数+比较级+than+B或A is+倍数+as+原级+as+B。所以本题需将much改为as。 much—as 2.Some think online shopping was more convenient and the goods are cheap. ____________________________________________________ 解析:句意:有些人认为网购更方便,商品更便宜。根据前面的“more convenient”可知此处应用比较级形式。 cheap—cheaper 形容词和副词的词形变化及词性转换是形容词和副词的考查热点。如果用来修饰名词或在系动词后作表语,应用形容词形式;如果用来修饰形容词、副词、动词或整个句子,则应用副词形式。正确分析句子结构,判断设空处在句中所作的句子成分,并牢记转换形容词和副词的规则及构词法,是解答此类题目的关键。 形容词和副词的词性转换 1.常见的形容词后缀。 (1)able: reasonable,comfortable,enjoyable,suitable,adjustable; (2)al: natural,additional,educational,traditional,national; (3)ant /ent: significant,important,excellent,different,convenient; (4)ish:foolish,selfish,childish; (5)ive:active,impressive,decisive,attractive,effective,instructive; (6)ly:manly,scholarly,friendly,lively,deadly; (7)ful:beautiful,wonderful,helpful,useful,successful,meaningful,thankful,powerful; (8)ous:dangerous,generous,courageous,various; (9)less:endless,aimless,powerless; (10)y:sunny,windy,funny,cloudy,rainy,healthy,wealthy; (11)d/ed:united,organized,closed,wounded,developed,appreciated,used,crowded,polluted,worried,married,terrified,satisfied; (12)ing:developing,living,sleeping. 2.形容词转换为副词的变化规则。 情况 变化规则 例词 一般情况 以y结尾的形容词 辅音字母+e结尾的形容词 在词尾加ly kind—kindly
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