Two months has passed since i started to study at Beijing University为什么是用has 不是 have 老师讲的我没听懂、、、 明天期中考

two months has gone.one new day My uncle bought the new car two months ago.My uncle has ______ the new car ______ two months ago. He has been there for__A two and a half month B two and a half months C two and the half months D two and half a month two months has passed since he joined the army为什么用has而不用have in two months提问 英语翻译这样翻译对么?How long has he been in Hongkong?For about two months. she has been to Beijing for two months这句话有错吗? In the last two months ,he______ several English novels.A、has read B、had read 为什么? 为什么It is two months since she left Beijing用is不用has been Mr green has come to China.（用时间状语for two months该写句子） mr.li has been in canada for one month.he plantsto stay for____(other) two months 一道英语同义句转换（初二）his mother has been ill for two months.his mother ___ ___ two months ago. He has broken into (several) computer systems in the past two months.(提问)______ _______computer______ ______ ______ ______ ______in the past two months?怎么没人回答啊 He__[has left/has been away/left]for two months.I hope he will be back soon He__not a night__ off two months.A.has,left B.is,away C.has,had D.is,out he has been in Shanghai for ( )A.two and a half months B.two and half a month C.two month and a half D.two months and half Is Mr.Smith still in Shanghai?—Yes,he ______ there for two months.A.has beenB.has goneC.has been toD.has gone to two more months对还是two months more对?