( ) .It's ____ must to have ____ good kowledge of English nowdays.A.a;a B.a;an C.a;/ D./;a 选什么 并说明原因.

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( ) .It's ____ must to have ____ good kowledge of English nowdays.A.a;a B.a;an C.a;/ D./;a 选什么 并说明原因.

( ) .It's ____ must to have ____ good kowledge of English nowdays.A.a;a B.a;an C.a;/ D./;a 选什么 并说明原因.
( ) .It's ____ must to have ____ good kowledge of English nowdays.
A.a;a B.a;an C.a;/ D./;a 选什么 并说明原因.

( ) .It's ____ must to have ____ good kowledge of English nowdays.A.a;a B.a;an C.a;/ D./;a 选什么 并说明原因.
A
must在此为名词 a must 必须的条件
have a good knowledge of 熟练地掌握,精通
不定冠词的用法
冠词本身不能单独使用,也没有词义,它用在名词的前面,帮助指明名词的含义.英语中的冠词有三种,一种是定冠词,另一种是不定冠词,还有一种是零冠词.
不定冠词a （an）与数词one 同源,是"一个"的意思.a用于辅音音素前,一般读作[e],而an则用于元音音素前,一般读做[en].
1） 表示"一个",意为one；指某人或某物,意为a certain.例如：
A Mr.Ling is waiting for you.有位姓凌的先生在等你.
2） 代表一类人或物.例如：
A knife is a tool for cutting with.刀是切割的工具.
Mr.Smith is an engineer.史密斯先生是工程师.
3） 组成词组或成语,如a little / a few / a lot / a type of / a pile / a great many / many a / as a rule / in a hurry / in a minute / in a word / in a short while / after a while / have a cold / have a try /keep an eye on / all of a sudden等.

我个人觉得选A
must这里是名词 ，意思是不可缺少的东西，必须的东西。
have a good knowledge of 精通；掌握； （固定搭配）

D

I parked my car right here but now it's gone.It ____ .A must have been stolen B must have stolenC may be stolenD must be stolen it's getting late and i ____ go home A.must B.have to It's ____ today. You must finish it ____(care) it must be fun ,____ ____?(反义疑问句) it`s windy today,so we ____ stay at home 1.must 2.can 3.may 4.have to I knew Alice’s watch.It must be ____(she).这题我做错了,那个大侠帮帮me It's time for me to get up .I ____ get up at seven .A need B must C can —It's getting late.I'm afraid I must go now.—OK.____ Asee youBgo slowlyCstay longer It’s ten o’clock.I must go ____.A.to home B.home C.my home D.his home 选择it is getting late,it's time we ____.it is getting late,it's time we ____ A.go B.went C.are going D.must go 答案是B怎么理解时态?选D不行吗? ( ) .It's ____ must to have ____ good kowledge of English nowdays.A.a;a B.a;an C.a;/ D./;a 选什么 并说明原因. 几道英语句型转换,1.I don't konw when Ishuold leave.=I don't konw ____ ____ ____ .2.Amy is prettier than Kate.=Kate ____ ____ ____ ____ ____.3.We must learn Engliash well.=It's ____ ____ ____ ____ ____Engliash well.4.Tom is the tallset student it s going to rain,____ ____? -____ ____?-It`s a black pen It must be she‘s 还是 hers? It must be Mr Wang’s purse（改为否定句） It ____ ____ Mr Wang’s purse.This computer belongs to Jenny.(同义句)This is _____ ______. It’s _____ today.Let’s ____.