两个小时之内是for two hours 为什么不是in two hours?我的

两个小时之内是for two hours 为什么不是in two hours?我的 在两个小时以内是in two hours还是for two hours? 学习两个小时英语是Study two hours还是Study for two hours,为什么 持续两小时用英语怎么说last for two hours还是last two hours?还有last 是及物还是不及物动词？ 他每天练习游泳两个小时 英语he ___ ___ for two hours ___ ___ 他们已经工作两个小时了.They have been working for two hours.They have worked for two hours.哪个他们已经工作两个小时了.They have been working for two hours.They have worked for two hours.哪个对,两个句子有何区别. 英语翻译高温烹煮火鸡两个小时 翻译 cook turkey ___ ___ ___ ___ ___ for two hours. 英语翻译翻译 高温烹煮火鸡两个小时cook turkey ___ ___ ___ ___ ___ for two hours. 英语翻译他们已经听了两个小时的音乐了They have ___ ___ to music for two hours 再等两个小时 英文 wait two more hours吗? I have math for two hours对画线部分提问(划线部分是for two hours ) We play volleyball for two hours.(对划线部分提问)划线部分是 two hours We play volleyball for two hours.（对划线部分提问）划线部分是two hours 让杰克每天晚上复习两个小时功课恐怕很困难 it's difficult to __ going over his lessons for two hours 英语翻译两个小时之内 用英语怎么说 两小时的路程?是two hours’drive还是two hour’s drive in two weeks是指两个星期之后还是之内? 放学后,我们踢两个小时的足球.英语怎么说We play soccer two hours .