并列连词 and 的用法：
由 and 连接的同一个主语的两个句子,前后两个时态,必须是一致的.
I like playing football and do sports every day.
由 and 连接的不同主语的两个句子,前后两个时态,必须是可以不一致的.
I play football and my dad used to play it. 并列连词 and 的用法：
由 and 连接的同一个主语的两个句子,前后两个时态,必须是一致的.
I like playing football and do sports every day.
由 and 连接的不同主语的两个句子,前后两个时态,必须是可以不一致的.
I play football and my dad used to play it.