1、please come to our meeting if you are free tomorrow.这句话是将来时,为什么用are,请明示.
2、in his letter,he said that he（ ）us very much.选项有missed和has missed,应该选missed,为什么,请详细说明.
3、we found the window broken.为什么是broken,而不是被动语态.
4、i have heared from my daughter since last month.这句话翻译是我上过个月收到了女儿的来信,是这样吗,那since怎么翻译呢?