made out 过去式.
因为后面是 she went shopping,前后一致.
你是说过去完成时吗?那是过去的过去.before是过去式的标志
比如:When he arrived at station,the train had left for 10 minutes.
这句话中,he arrived at station 是过去的一个点,而train had left 比这个时间点还要早,所以是过去的过去.
而现在完成时,句尾一般都有 since...或for ..years
made out 过去式.
因为后面是 she went shopping,前后一致.
你是说过去完成时吗?那是过去的过去.before是过去式的标志
比如:When he arrived at station,the train had left for 10 minutes.
这句话中,he arrived at station 是过去的一个点,而train had left 比这个时间点还要早,所以是过去的过去.
而现在完成时,句尾一般都有 since...或for ..years