Why the explosion occured was ______ the laboratory attendant had been careless.答案是that,为什么 英语
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【答案】 that是个从属连词,可以引导表语从句,在句中无词义. 追问： 那为什么不能用because呢，because也可以引导表语从句啊 追答： 因为why和because不能同时使用，不像我们汉语那样。但可以分开用于表语从句。如： -----Why were you absent from school yesterday? ------It was because I had a bad cold then.