掌握每一個(gè)語法知識，會讓你在學(xué)習(xí)英語的時(shí)候更加如魚得水。下面是學(xué)習(xí)啦小編收集整理的初二英語《定冠詞的常見用法》的必備知識點(diǎn)以供大家學(xué)習(xí)。

　　初二英語必備知識點(diǎn)：定冠詞的常見用法

　　定冠詞也出現(xiàn)在其他11種情況中，非同時(shí)注意不可。

　?、庞迷趩螖?shù)名詞前面，以代表同類的人或物，如：

　　The ox is a useful animal for farmers.

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

　　但當(dāng)涉及 man 和 woman 這兩個(gè)名詞時(shí)，一般上不必用 the ：

　　Man is mortal.

　　Woman differs from man in many ways.

　　⑵用在單數(shù)名詞前面來表示有關(guān)名詞的抽象概念，如：

　　Don't play the fool.

　　Peter is fond of the bottle.

　?、怯迷跀?shù)目字前面，如：

　　Mr Li is somewhere in the 30s.

　　She was not yet born in the 50s.

　　⑷用在測量單位前面，以表示“每”(each/per)，如：

　　Some factory workers are paid by the hour.

　　This car usually does 15 kilometres to the litre.

　?、捎迷诒容^級形容詞或副詞之前，以加強(qiáng)其意義，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.

　?、视迷?ldquo;the more/better……the more/better……”結(jié)構(gòu)里，如：

　　The more we practise, the more we improve.

　　The better the staff, the better the performance.

　?、擞迷跇菲髅Q之前，如：

　　The piano sounds better than the organ.

　　⑻用在劇院、電影院之前，如：

　　Do you often go to the cinema?

　　Tom went to the Lido last week.

　?、陀迷谒膫€(gè)方向之前，如：

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

　?、斡迷趶?fù)數(shù)姓氏之前，以表示有關(guān)家人，如：

　　The Browns will visit us tonight.

　　⑾用在某些慣用語之前，如：

　　We know the ins and outs of the matter.

　　Compare the pros and cons before you make your decision.

　　初二英語必備知識點(diǎn)：疑問附加語isn't it

　　"John is smart, isn't it?"

　　這個(gè)疑問句里的附加語(question tag)對嗎?如果是不對的話，錯(cuò)在哪里?

　　在公共場所或辦公室里，只要稍為留心，不難聽到“ isn't it ? ”這個(gè)附加語。這種疑問句是英文幾種疑問句中的一種，主要的用途在強(qiáng)制答話人提供問話人心目中的答案。

　　這個(gè)疑問句有一定的格式，即：

　　·肯定敘述句(affirmative statement)+否定附加語(見例 ①及②)

　　·否定敘述句(negative statement)+肯定附加語(見例③及 ④)

　　①M(fèi)ary is happy, isn't she?

　?、赥hey will come, won't they?

　?、跰ary isn't sad, is she?

　?、躎hey won't come, will they?

　　此外，附加語中的代名詞(pronoun)和助動詞(auxiliary verb)必須和敘述句中的相符。

　　這類疑問句看似簡單，其實(shí)容易出差錯(cuò)。其中一個(gè)錯(cuò)誤便是附加語的時(shí)態(tài)(tense)不對，如：

　?、軾ou could hardly expect him to help you, can you?

　?、轙he minister will talk about regional cooperation, wouldn't he ?

　　另外一種錯(cuò)誤是助動詞的錯(cuò)用，如：

　?、逿he clerks are working hard, don't they?

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

　　“isn't it”的濫用

　　最常見的錯(cuò)誤來自“isn't it”的濫用，如：

　?、酛ason likes this book very much , isn't it?

　?、釹he 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?

　　這6個(gè)錯(cuò)誤的附加語改正如下：

　?、酛ason likes this book very much, doesn't he?

　?、釹he 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個(gè)句子中才是正確的用法：

　　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?

　　現(xiàn)在再看看“John is smart , isn't it ?”錯(cuò)在哪里。很明顯的，錯(cuò)在附加語里的代名詞：應(yīng)該是“he ”，不是“it”，全句如下：John is smart, isn't he?