题目内容

Goldfish don’t know _______ to them three seconds ago.
A．what happens B．what is happeningC．what happenD．what happened
D

试题分析：英语宾语从句中一般为陈述语序。句意：金鱼们不知道三秒前他们发生了什么事. happen to主语是事物,后接表示人的单词做宾语,一般用sth happen to sb结构,某人发生了某事. 故选D.
点评：宾语从句中一般为陈述语序，需注意当疑问词做从句主语时，则貌似倒装句，需注意区分。关于引导词的区分需结合引导词的基本含义及其在句子中所承担的句子成分进行具体分析。宾语从句的时态和主句没有必然的联系，需结合语境具体分析。
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