_______ about my mother's health, I went to my hometown last Sunday._______ about my mother's health, I went to my hometown last Sunday.A. Concerning B. Concernde C.To be concerned D.Being concerned答案是什么?并麻烦解释一下.

_______ about my mother's health, I went to my hometown last Sunday._______ about my mother's health, I went to my hometown last Sunday.A. Concerning B. Concernde C.To be concerned D.Being concerned答案是什么?并麻烦解释一下.
_______ about my mother's health, I went to my hometown last Sunday.
_______ about my mother's health, I went to my hometown last Sunday.
A. Concerning B. Concernde C.To be concerned D.Being concerned
答案是什么?并麻烦解释一下.

_______ about my mother's health, I went to my hometown last Sunday._______ about my mother's health, I went to my hometown last Sunday.A. Concerning B. Concernde C.To be concerned D.Being concerned答案是什么?并麻烦解释一下.
答案：B
1、这题应该填一个非谓语动词,因为逗号后面是一个完整的句子（主谓宾齐全了）,四个答案都可看做非谓语形式.
2、了解concern的用法：
1）用作及物动词动词
① 意为“与……有关；涉及”,如：
Don’t interfere in what doesn’t concern you.别管与自己无关的事.
注意：其过去分词concerned常用来作表语,意为“和……有关；牵涉”；而作定语,则意为“有关的”,如：
It is reported that the pop singer is concerned with selling drug.据报道,那个流行歌手涉嫌贩毒.
② 意为“使担心；使关心；使烦恼 ”,如：
The boy's poor performance at school concerned his parents.
注意：其过去分词concerned通常作形容词用,意为“担心的；烦恼的；忧虑的”.如：
The concerned parents were all concerned for the children's safety.忧心忡忡的家长们都为孩子们的安全担忧.
2）常用搭配：
① concern oneself with / in / about sth.“忙于某事 / 关心某事 / 参与某事”.
② as / so far as sb./ sth.be concerned“就某人 / 某物而言”.
③ be concerned in / with sth.“与某物有牵连”.
④ be concerned to do sth.“把做某事视为自己的事情”.
⑤ show / express concern about / for “对……表示关心、担心”.
⑥ have a concern in / with...“与……有利害关系”.
⑦ be concerned about.../ that...“关心……；担心……”.
3、答案解析：
1）A答案是动词的现在分词,concern是不及物动词,选了A答案就不需要介词about了.
2）B、C、D答案都用了"be concerned about“这个短语,C是动词不定式,表将来或目的,D是现在分词,表进行或伴随,但是这里仅仅表原因,不需要强调将来,目的,进行或伴随,所以不选.B答案是过去分词,非谓语动词作原因状语,你也可以认为因为要填非谓语动词,所以把be动词去掉了.

你好。答案是B
=== As I WAS CONCERNED ABOUT -- - - - (做原因状语从句)

答案是B, concerned
1. Concerning为介词，相当于about/on，意思是“关于”。
2. Concerned about my mother's health: 因为担心我母亲的健康，....
是过去分词短语作原因状语，最符合题意
3. To be concerned ，不定式短语有“将来”“目的”的含义，用在这个句子里，意思是“为了担...

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答案是B, concerned
1. Concerning为介词，相当于about/on，意思是“关于”。
2. Concerned about my mother's health: 因为担心我母亲的健康，....
是过去分词短语作原因状语，最符合题意
3. To be concerned ，不定式短语有“将来”“目的”的含义，用在这个句子里，意思是“为了担心母亲的健康，”不符
4. Being concerned........ 现在分词短语，表示和句子谓语动词“伴随”，意思是“我在担心母亲健康的同时，去了故乡。”也不符。

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B，concerned。这里应该就是过去分词短语做壮语表原因。