I was looking at the photos on the noticeboard when I heard a voice behind me.
在这里when是并列连词。
I was cooking when my mother got home .
这里when应该是从属连词。但是我觉得这句话,when也可以是并列连词。
从属连词和并列连词怎么区分呢?请师傅解答下,多谢!
下列情况中的when是并列连词:(1)在when 前面的句子中,谓语动词是过去进行时;(2)在when 前面的句子中有 was (were) about to 或者 was (were) on the point of ;(3)在when 前面的句子中,谓语动词是 过去完成时或者过去完成进行时。
(有关例句可查阅词典或者赵振才编著的《英语常见问题解答大词典》)