在《定冠詞省不得》一文里，談到了 5 個(gè)必須用定冠詞的例子。
定冠詞也出現(xiàn)在其他 11 種情況中，非同時(shí)注意不可。
⑴用在單數(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.
⑶用在數(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(cè)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.
⑸用在比較級(jí)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.
⑹用在“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.
⑺用在樂器名稱之前，如：
● The piano sounds better than the organ.
⑻用在劇院、電*之前，如：
● Do you often go to the cinema?
● Tom went to the Lido last week.
⑼用在四個(gè)方向之前，如：
● The sun rises in the east and sets in the west.
⑽用在復(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.
定冠詞也出現(xiàn)在其他 11 種情況中，非同時(shí)注意不可。
⑴用在單數(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.
⑶用在數(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(cè)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.
⑸用在比較級(jí)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.
⑹用在“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.
⑺用在樂器名稱之前，如：
● The piano sounds better than the organ.
⑻用在劇院、電*之前，如：
● Do you often go to the cinema?
● Tom went to the Lido last week.
⑼用在四個(gè)方向之前，如：
● The sun rises in the east and sets in the west.
⑽用在復(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.