为什么不能用 i would travel by air a great deal

为什么不能用 i would travel by air a great deal I used to travel by air a great deal 英语翻译I used to travel by air a great deal when i was a boy.My （二）、阅读短文,判断正（T）误（F）I used to travel by air a great deal when travel a great deal I would like to travel by air to london.中的by air 和 to london 关于许多的概念.i used to travel a great deal.i used to travel ( )A. She would not travel by air for anything.前边为什么用would? I used to travel by air often when I was a boy. i used to travel by air.i always went on a long___ 1 trip 2 【英语语法】by a I go to school by a car.算不算错?还是只能用by car 为什么? I care about you a great deal