初中语法讲解：名词与冠词1-3
[00:17.47]John Denver,a famousAmerican singer,diedin an aircraft crash.作同位语
[00:51.88]冠词
[01:02.68]冠词分为不定冠词和定冠词两种不定冠词a, an定冠词the
[01:25.42]1 不定冠词的用法不定冠词有a和an两种形式，a用在一般名词之前
[01:36.74]an用在发音上以元音音素开头的词之前(不是以元音字母开头的词)
[01:49.19]a housean houra universityan umbrella
[02:52.90]a bookan apple
[02:58.13]1)第一次提到某人或某物时，比如There's a ball underthe chair.
[03:10.19]Mrs. Li is a mathteacher.
[03:15.68]2)代表某一类人或事物比如，A horse is a usefulanimal.
[03:32.55]Even a child cananswer this question
[03:42.16]3)表示“每一”的意思比如，Take this medicinethree times a day.
[03:57.75]4)用于固定词组搭配，比如，have a resta long time
[04:13.24]a few a littlea lot of a bitgo out for a walk
[04:32.56]2 定冠词的用法
[05:14.53]1)特指某个或某些人或事物，或指谈话双方都知道的人或事物，或复述上文提过的人或事物
[05:28.75]They 're playingbasketball.The ballis hers.
[05:43.65]Would you please ta-ke the book to Mr.Liu?
[05:59.54]There is a table bythe window.On thetable there are somebooks.
[06:26.50]2)用在世界上独一无二的事物或专有名词或方位名词等前面
[06:37.10]Liu Beibei wants tovisit the SummerPalace.
[06:48.46]The sun sets in thewest.
[07:10.69]3)用在单数可数名词之前，表示某一类人或事物
[07:19.56]The computer is auseful machine.The elephant is big-ger than the horse.
[07:55.76]4)用在序数词，形容词及副词最高级、only修饰的名词前
[08:09.23]This is the firsttime he visitsEurope.
[08:23.98]She's the best teac-her they have evermet.
[08:41.16]She's the only teac-her who has been toboth America andBritain.
[09:01.67]5)用在乐器的名称前My daughter likes toplay the piano.
[09:45.97]6)和某些形容词连用，表示某一类人the poor the youngthe wounded
