When he finally arrived back in Britain, Darwin was already starting to create his famous theory that all living things had a common ancestor.1.all living things had a common ancestor是否是由that引导的同位语从句（先行词/同位名词是theory）？2.句子all living things had a commo...
下面这题是2013年的江西高考题：I ______ to visit you later that day, but I had to phone and cancel. A. come
B. came
C. am coming
D. was coming所给答案是D。为什么只能用过去进行时呢？用一般过去时就错了吗？在线等，谢谢！
My friend, Herbert, has always been fat, but things got so bad recently that he decided to go on a diet.句中“has always been fat”用了现在完成时，究竟是什么含义？这里为什么要用现在完成时呢？可以改成“is always fat”吗？含义有何不同呢？麻烦老师...
2012年四川卷完形有一个句子：
There is no way I am going to listen to Sibson scream and die in that fire.
问题 1：有 listen to sb do 这种结构吗？那 listen to sb doing 呢？
问题 2：这个句子怎么翻译？关键在于 listen to 翻译。我个人认为翻译为&...
I bought a radio here yesterday, but it __________ work, so I am here
to change it. A. didn’t B. isn’t C. can’t D. doesn’t曹老师您好，这道题答案选d，为什么不能选c呢？选d一般现在时态表示的不是事件意义吧，在说话人关心的时间也就是说话时很...
You don't look through a pile of letters while apologizing to a person
lower In position after blaming him or her for a mistake that turned out to be
your fault.老师，您好，这句话，我翻译不通顺啊，具体如何翻译呢？再就是最后的that怎么理解？是引导同位语从句...
... are out of your control.
Nick is worried that He can't get promoted, but I think it's silly to worry about things which are out of his control.
那It's silly后面到底是接doing还是to do呢？
再进一步说的话，it's +adj后面是接doing还是to do呢？
Rumors have it that secret tunnels lead out of this castle, but we haven't found any. 传说这座古堡里面有条暗道，可我们还没找到。lead out of 为什么是"一直通到"的意思呢？ lead是引向...而out of 是从...里面出来的意思。我不能理解为什么lead out of ...
...指点斧正。First, other drugs, glutarimides—themselves potent protein-synthesis inhibitors—either failed to cause amnesia in some situations where it could easily be induced by puromycin or produced an amnesia with a different time course from that of puromycin. 首先，其他类的药...
...Be sure to lock your bicycle. 自行车务必上锁。Be sure to turn off the light when you go to bed. 上床睡觉时一定要关灯。Be certain you catch your train on time. 务必准时赶上火车。