Have you seen pen.I left it yestoday.A.a B.Have you seen pen.I left it yestoday.A.a B.an C.the D./

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Have you seen ____ pen.I left it yestoday.A.a B.Have you seen ____ pen.I left it yestoday.A.a B.an C.the D./
Have you seen ____ pen.I left it yestoday.A.a B.
Have you seen ____ pen.I left it yestoday.
A.a B.an C.the D./

Have you seen ____ pen.I left it yestoday.A.a B.Have you seen ____ pen.I left it yestoday.A.a B.an C.the D./
选择A
第一种没有特指 ,只是问有没有看到一只笔

A,首先是一支不是那支，因为别人不知道是什么样的，不知道是哪支，所以不能特指，排除C，接着pen不是元音字母也不是元音音素开头，所以用a,不用an

Have you seen __the__ pen.I left it yestoday.
，the 和 a 取决于是否特指
第一种没有特指，第二种特指了我丢在这里的笔。所以一个是a 一个是the

A 我忘记昨天把它放在那里了

A 你看见过我的钢笔吗？我忘记昨天放哪了

A.。the是特指。你已经丢了，怎么告诉别人是哪个？

第一次出现用a,第二次用the。如果换个说法，结果就不同了。如，i left a pen yesterday,have you seen the pen.或是原文那样have you seen a pen,i left it yesterday.做此类题主要看修饰的对象第几次出现，如上述的例子。望采纳

C如果pen后没有.

选C吧，特指昨天丢失的

Have you seen him yet?--Yes,I have seen him ____.just还是already? Have you seen your ____ (enjoy) online magezine today?为什么？ have you seen anything Have you seen John? You mustn't smoke here ,_____ ______?They must have seen the movie yesterday,____ ____? Have you seen ____ pen.I left it yestoday.A.a B.Have you seen ____ pen.I left it yestoday.A.a B.an C.the D./ “Have You Ever Seen Me? Have you ever seen snow? Since I have seen you Where have you seen them? have you seen的意思 Have You Seen Her 歌词 have not seen you ages what emergencies you have seen I HAVE NOT SEEN YOU , Have you ever seen a hare ____ a pocket or a watch?But Alice has No ____!Have you really seen ______?1.kidding,kid 2 kidding,kids ---____ you ______ the film yet?---Yes.l ____ it last Saturday.A.Have；seen；have seen B.will；see；sawC.Did；see；sawD.Hve；seen；saw我已经知道是D了，A为什么不可以？