...曹老师解析一下与动词时体有关的问题：Tom _____ in China
for 20 years. And now he teaches Chinese in America.A. arrived B. has arrived C. has
been D. was参考答案是C.估计是有人认为现在完成时是“因”，后面的一般现在时是“果”，所以有人靠判...
请教专家：1a:Many
of the pilots were to achieve eminence in the aeronautical world. 1b:Many
of the pilots were to have achieved eminence in the aeronautical world. 2：If it were
to rain tomorrow, we would stay at home.关于were
to的问题，（1）1a和1b显然不是虚拟语气，书上说...
Railway is to a country what blood vessel is to a man's body.Environment is to us what water is to fish.老师，请问这个A is to B what C is to D，它的结构是不是is前面的那个单词都是零冠词，因为railway，blood vessel，environment（要表示生态环境或者自然环境...
“He heads away for about five steps，then turns back，runs，and fly through the air like the Karate Kid，and his foot goes right through the door.”请问老师，这里fly和go都是不及物动词吗，我在牛津里没找到符合句意的fly through和go through这样...
...西餐进行比较，可否这样改写呢：
1.Chinese and Western foods are often very different from each other.
2. Chinese food is often very different from Western food.谢谢老师指导！
We've gotten to watch more TV this year than last.请问各位老师，这里have gotten to的用法是什么，我似乎在词典里找不到. 夸克的语法大全中把have got to归纳为情态习语与链接动词get to的完成体不同，它认为have gotten to是属于后者。have got to...
Individual smokers can be fined up to 200 yuan, while businesses can face fines of up to 10,000 yuan if they fail to discourage smoking on their premises.1) be fined up to中，up to 为副词，修饰be fined, 200 yuan为fine的宾语，这样理解对吗？2）fines of up to中，of为介词...