题目内容：

1.How is your mother these days?
She is in( )hospital again.She is in ( )hospital whereshe stayed last time.
A.the,/ B./,the C.the,the D./,/
2.though l’vefailedtwice,l’m going to have( )third try.
A.aonther B.the,C./ D.a
3.( )people who are ready to help others will get help from( )others when they are in trouble .
A.the,the B.the,/ C./,/D those,the
4.John was asked if he was ( )European or ( )American.
A.a,an B.an,an C.a,a D an,a
5.he is ( )new comer to ( )chemistry but he has already made some important discoveries.
A the,the B.the,/ C a,/ D a,the

优质解答

1.B.in hospital住院,in the hospital在医院.【你的母亲这些天怎么样呢?她又在住院,她在上次呆过的医院.】
2.D.a third try 和 the third try的区别是：前者表示“再试一次”,后者表示“第三次”【尽管我已经失败了两次,我还是要再试一次.】
3.B.第一个空后面的people是做的事who are ready to help others定语从句的先行词,作为特定人群,所以需要加the,而第二空的others是泛指其他所有人,而不是特指.【那些总是乐于助人的人当遇到麻烦时,会得到其他人的帮助】
4.A.a/an 之间的区别就是“当后面的单词是元音音标开头时,用an,当后面的单词是以辅音音标开头时用a；所以此题中的European是/j/开头,而American是以/ə/开头的.【约翰问他是欧洲人还是美国人】
5.C.第一个空,表示“一个新来的人”,对于某种学科,一般不加冠词.【他对于化学来说是一个新人,但是他已经做了一些重要的发现.”】
这是我自己的想法,不知是否能帮助您.