初二英语必备知识点：定冠词的常见用法

　　掌握每一个语法知识，会让你在学习英语的时候更加如鱼得水。下面是学习啦小编收集整理的初二英语《定冠词的常见用法》的必备知识点以供大家学习。

　　初二英语必备知识点：定冠词的常见用法

　　定冠词也出现在其他11种情况中，非同时注意不可。

　　⑴用在单数名词前面，以代表同类的人或物，如：

　　The ox is a useful animal for farmers.

　　This type of work is easier for the teacher than for the student.

　　但当涉及 man 和 woman 这两个名词时，一般上不必用 the ：

　　Man is mortal.

　　Woman differs from man in many ways.

　　⑵用在单数名词前面来表示有关名词的抽象概念，如：

　　Don't play the fool.

　　Peter is fond of the bottle.

　　⑶用在数目字前面，如：

　　Mr Li is somewhere in the 30s.

　　She was not yet born in the 50s.

　　⑷用在测量单位前面，以表示“每”(each/per)，如：

　　Some factory workers are paid by the hour.

　　This car usually does 15 kilometres to the litre.

　　⑸用在比较级形容词或副词之前，以加强其意义，如：

　　The teacher explained the idea again, but his students were none the wiser.

　　Your mind will function all the better if you have some time away from your work.

　　⑹用在“the more/better……the more/better……”结构里，如：

　　The more we practise, the more we improve.

　　The better the staff, the better the performance.

　　⑺用在乐器名称之前，如：

　　The piano sounds better than the organ.

　　⑻用在剧院、电影院之前，如：

　　Do you often go to the cinema?

　　Tom went to the Lido last week.

　　⑼用在四个方向之前，如：

　　The sun rises in the east and sets in the west.

　　⑽用在复数姓氏之前，以表示有关家人，如：

　　The Browns will visit us tonight.

　　⑾用在某些惯用语之前，如：

　　We know the ins and outs of the matter.

　　Compare the pros and cons before you make your decision.

　　初二英语必备知识点：疑问附加语isn't it

　　"John is smart, isn't it?"

　　这个疑问句里的附加语(question tag)对吗?如果是不对的话，错在哪里?

　　在公共场所或办公室里，只要稍为留心，不难听到“ isn't it ? ”这个附加语。这种疑问句是英文几种疑问句中的一种，主要的用途在强制答话人提供问话人心目中的答案。

　　这个疑问句有一定的格式，即：

　　·肯定叙述句(affirmative statement)+否定附加语(见例 ①及②)

　　·否定叙述句(negative statement)+肯定附加语(见例③及 ④)

　　①Mary is happy, isn't she?

　　②They will come, won't they?

　　③Mary isn't sad, is she?

　　④They won't come, will they?

　　此外，附加语中的代名词(pronoun)和助动词(auxiliary verb)必须和叙述句中的相符。

　　这类疑问句看似简单，其实容易出差错。其中一个错误便是附加语的时态(tense)不对，如：

　　⑤You could hardly expect him to help you, can you?

　　⑥The minister will talk about regional cooperation, wouldn't he ?

　　另外一种错误是助动词的错用，如：

　　⑦The clerks are working hard, don't they?

　　⑧Betty won't be a sportswoman, can she?

　　“isn't it”的滥用

　　最常见的错误来自“isn't it”的滥用，如：

　　⑨Jason likes this book very much , isn't it?

　　⑩She can sing well, isn't it?

　　11.Our team won, isn't it?

　　12.Young Singaporeans have become achievement - oriented , isn't it?

　　13.All our teachers are dedicated, isn't it?

　　14.They will go shopping on Sunday, isn't it?

　　这6个错误的附加语改正如下：

　　⑨Jason likes this book very much, doesn't he?

　　⑩She can sing well, can't she?

　　11.Our team won, didn't it?

　　12.Young Singaporeans have become achievement - oriented, haven't they?

　　13.All our teachers are dedicated, aren't they?

　　14.They will go shopping on Sunday, won't they?

　　"lsn't it ? "在下列3个句子中才是正确的用法：

　　15.It is fine today, isn't it?

　　16.That story book is interesting, isn't it?

　　17.It is worthwhile learning a second language well, isn't it?

　　现在再看看“John is smart , isn't it ?”错在哪里。很明显的，错在附加语里的代名词：应该是“he ”，不是“it”，全句如下：John is smart, isn't he?