16.Tom is ________ taller of the two boys.

　　答案　the　当用于比较级前表示“两者中较……的”时，应用定冠词the。

　　17.I fell in love with the city ________ first time I came here.

　　答案　the　句意：我第一次来这里的时候就爱上了这座城市。序数词或形容词最高级前应用定冠词the。

　　18.The man caught the thief by ________ arm.

　　答案　the　句意：那人抓住了小偷的胳膊。“动词+sb.+介词+the+身体部位”为固定结构，故应填the。

　　19.He was born in ________ 1990s when his mother worked in a factory.

　　答案　the　句意：他出生于二十世纪九十年代，那时他的母亲在一家工厂工作。在表示世纪、年代的词前应用定冠词the。

　　20.Mary can play ________ violin well, but she can't play ________ piano.

　　答案　the; the　句意：玛丽小提琴能拉得好，但她不会弹钢琴。表示乐器的名词与play连用时，名词前应用定冠词the。

　　21.Our library is in ________ center of our school.

　　答案　the　句意：我们的图书馆在校园的中心位置。在表示方位、位置的名词前用定冠词the。

　　22.________ poor are against the plan, but ________ rich are for it.

　　答案　The; the　句意：穷人反对这个计划，而富人们赞成。“the+形容词”表示一类人或物。

　　23.When the phone rang, ________ Whites were watching TV.

　　答案　the　句意：当电话铃响的时候，怀特一家人/夫妇正在看电视。定冠词the用在姓氏的复数形式前，表示一家人或夫妇俩。

　　24.This morning I had ________ big breakfast, so I'm not having anything for lunch.

　　答案　a　三餐名词前面不用冠词，但是如果在三餐名词前面加上了适当的描述性修饰词语，则前面需要加冠词。

　　25.You'd better go abroad by ________ plane so as to get there earlier.

　　答案　/　表示交通工具的名词与by连用时，名词前不用冠词。

　　26.We have no classes on ________ Sunday, so we often go to play ________ football.

　　答案　/; /　句意：我们星期日不上课，因此我们经常去踢足球。在表示星期、球类、三餐、学科、语言、季节等词前通常不用冠词。

　　27.They are paid by ________ month.

　　答案　the　句意：他们按月计酬。定冠词the用于表示时间或度量单位的名词前，表示“每一”。如：by the hour/week/month/year/ dozen/kilo等。

　　28.He couldn't remember when he first listened to Tom's speech, but he was sure it was ________ Monday because everybody was at work.

　　答案　a　句意：他不记得第一次听汤姆的演讲是在什么时候了，只能确定是在某个星期一，因为大家都在上班。某一个星期几表泛指，其前加不定冠词a。

　　29.________ harder you work, ________ greater progress you will make.

　　答案　The; the　句意：你越努力，取得的进步就会越大。“the+比较级……，the+比较级……”意为“越……就越……”。

　　30.________ moon travels around ________ earth.

　　答案　The; the　句意：月亮围着地球转。表示世界上独一无二的事物前用定冠词the。

　　二、改正下列句子中的错误(每句只有1处错误)。

　　1.I grew up on a farm in Idaho, but I did not want to become farmer.

　　_____________________

　　答案　become后加a　farmer为可数名词。可数名词的单数形式前必须要有冠词、指示代词或形容词性物主代词来修饰。根据句意，此处是指“我不想成为一名农民”，表示泛指，故用不定冠词a。

　　2.All the students in our class made a progress by studying harder this term.

　　_____________________

　　答案　去掉a　progress为不可数名词，前面不用冠词。make progress意为“取得进步”。

　　3.It is not rare in 1990s that people in their fifties are going to university for further education.

　　________________________

　　答案　1990s前加the　在表示世纪、年代的词前要加定冠词the。

　　4.The building was set up in a September of 1990.

　　_______________________

　　答案　a→the　此处特指1990年的9月，故应用定冠词the。

　　5.The sports meeting was great success.

　　____________________________

　　答案　great前加a　当success表示“成功的人或事”时，经常与不定冠词连用。

　　6.She was waiting for him for a hour in the rain.

　　_____________________________

　　答案　a→an　hour的始发音为元音音素，故用an。

　　7.In my opinion, you'd better go to the restaurant where you had a lunch and look for your lost wallet.

　　__________________________

　　答案　去掉a　表示三餐的名词前一般不用冠词。

　　8.This is a most interesting film that I have ever seen.

　　__________________________

　　答案　a→the　“the+most+多音节形容词(+名词)”为多音节形容词的最高级形式，表示“最……”。而“a most+形容词+名词”或“most+形容词”结构中，most不表示最高级含义，为“很，非常”的意思。

　　9.I had wonderful supper yesterday.

　　_____________________

　　答案　had后加a　当表示三餐的名词前有修饰语时，前面需要加冠词。

　　10.Apple is sold by the weight and coal is sold by the ton.

　　_________________________

　　答案　去掉第一个the　the常用于表时间或度量单位的名词前，如：by the hour/day/week/month/year/dozen/yard/ton/kilo，但是size/weight/time这类名词跟by连用时不加冠词。

　　11.After dinner he gave Mr. Richardson the ride to the airport.

　　_________________________

　　答案　第一个the→a　give sb. a ride为固定搭配，意为“载某人一程，让某人搭便车”。

　　12.One way to understand thousands of words is to gain the good knowledge of basic word formation.

　　__________________________

　　答案　the→a　gain/have a good knowledge of...为固定搭配，意为“精通……”。

　　13.The classroom is on fourth floor.

　　__________________________

　　答案　fourth前加the　序数词前加定冠词the表示“第几”。

　　14.He is an only one who has worked out the problem.

　　__________________________

　　答案　an→the　the only修饰名词或代词意为“唯一的……”。

　　15.After years of hard work, he has turned a skilled worker.

　　__________________________

　　答案　去掉a或turned→become　turn worker=become a worker，意为“成为一名工人”。