a few; a little; a lot of;

　　a bit of; a couple of; a great deal of;

　　many a; all of a sudden; as a matter of fact;

　　in a word; have a word with sb. have a good time;

　　do sb. a favor pay a visit to; as a rule

　　in a day or two; in a way; make a living;

　　two pills at a time; take a walk/break/bath/seat;

　　have a cold/fever/headache/stomachache

　　2.定冠词the的用法

　　the 在辅音前发/ / 在元音前发/ /

　　(1)表示特指和第二次提到的人或物：

　　Here the books you want.

　　I saw a film last night. The film was wonderful.

　　(2)表示世界上独一无二的东西：the sun;the earth;the moon

　　(3)用在序数词、形容词最高级前面：the first-class; the third floor; the longest river

　　(4)用在江、河、湖、海、山 脉、群 岛、海 峡、海 湾、沙 漠、方 位 前 面：

　　the Changjiang river; the West Lake ; the Great Canal(大运河);