Peter knew _______________.A.whether he has finished reading the bookB.why the boy had so many questionsC.there were 12 months in a year D.when they will leave for Paris这个题答案选的是B,A、D时态不对；C怎么错了?
问题描述：
Peter knew _______________.A.whether he has finished reading the book
B.why the boy had so many questions
C.there were 12 months in a year
D.when they will leave for Paris
这个题答案选的是B,A、D时态不对；C怎么错了?
答
要改为there are 12 months in a year，因为一年有12个月这是客观存在的现象，所以尽管前面是一般过去时，但宾语从句仍用一般现在时。
答
C是客观真理，应该是there are，在宾语从句当中，不管什么时态下，客观真理都是一般现在时
答
C 错在把现在的客观事实用过去式 改为 are 就对了
不懂继续问( 天天在线 ）
答
一年有12个月是一个事实，而且这个事实不会随任何东西改变，所以即使前面是过去时等时态，都不变