原句：A desire to sell gold appeared to have been worsened by thinking that concerns about the Greek economy have somewhat eased. 此句中可以用appear to be 吗？Appear to have done 和appear to do 有何区别？谢谢老师精彩解答。
前面有个网友的问题中有这样一个句子：Sylvia regularly took a crowded subway train to work during rush hour.请问这里的 during rush hour 用得对吗？为什么不用 复数 during rush hours 或用定冠词 during the rush hour？
...s/letters ： 可以把 a deluge of 看作不定量词做定语么？ the foundation for a smorgasbord of new games. 其中 smorgasbord 意为大杂烩， 那这里的of new games是做后置定语，说明 smogasbord是由....组成的。另外想请老师确认一下， a +名词 ...
...g dinner. （可能/应该 + 去吃饭/正在吃饭）？I don't think the bus should be running today. （可能/应该 + 会去开/正在开）？想问下老师，should 怎么知道它是“可能”还是“应该”？ 以及，should be having/running 这种进行时有表示将...
...不带as有什么区别？2 as+分词作 定语 表语 状语etc，Their story, though not as spectacular to the eye, will surely turn out to be as subtle and as complex.这句话是上面的第一个问题，但我实在没品出去掉as后的区别，感觉也完全正确...
we committed to a tradition of excellence, where success stimulates the
desire to better oneself time and time again, then as now.1）time and time again，这里again为副词，time在这里的词性是什么？这个短语中词的词性和语法如何理解？2）then as now，then在这里为...
...y own personal improvement；self-improvement（自我提升）区别如：The first resolution is
about my own personal improvement. 第一个决心与我提升有关。There is nothing more important than searching information about self
improvement. 没有什么比寻找提升自己生活的信...
...(即鲸不是鱼就如同马不是鱼一样)。no/ not more than不超过There are beautiful
mountains not/no more than ten minutes' drive away.开车不超过10分钟，就能看见峻秀的山脉。Choose no/not more than three options. [=choose three options or
fewer]选项不得超过三个（...
...说过这两个短语动词意思一样的呀。
1. We should ______ the life on our beautiful planet.
答案为：think of 或者 think about 都行。
2. I'm ______ going to France for our holiday.
答案为：thinking of。
请老师讲讲这两个短语动词的用法。...