看到以前有网友提问：From then on, I ____ to the forest four times a year A.had gone B.have gone C.went D.will go 选的c，当然c肯定是对的，但我有别的疑问I have called him three times this morning 这句是语法书里看到的。我的理...
...前的一般时态”还是“之前的完成时态呢”？比如he seems to have been ill.这个不定式完成态是表示1.that he was ill then,即那时病了，现在病没病不知道，只是纯粹的表示之前一般动作。还是2.that he has been ill,过去生病，现在还病着，即...
One reason why it is hard to design and teach such courses is that they can cut across the insistence by top American universities that liberal-arts educations and professional education should be kept separate, taught in different schools. 这里为什用by短语作后置定语，我感觉应该...
...句 "Honestly, I have never intervened in her
choices. If she doesn't want to go, that will save me money," Liu says,
adding that having a child spend more time with their family is more meaningful
than taking extra classes.
我的疑惑是：在这个灰色的分句中，我觉得“spend more tim...
...people skills.” Research has shown that
emotional skills may contribute to some of these qualities, but most of them
move far beyond skill-based emotional intelligence.
...om an armoured van sparked a mad scramble - and police
arrests - on a US
motorway on Friday morning.Videos on social media show money raining down as people scramble to
pick up dollars strewn across the road.It happened on the Interstate 5 in California's
San Diego
county.上面这段文字来源自...
...e by the robot.定语从句吗？2）我看到This
is my first time coming to China 这样的正确的句子，并且在语法网上看到此类句子可以改成现在完成时，因此上句=Scientists say this
is the first time it being done by the robot. 吗？3）This
is the first time...后为...
请问主语从句中的what是不是在从句中作为happening的逻辑主语？What the company needs to avoid happening in the future is sales decreasing if clients stop feeling they're getting that treatment from happy, motivated staff here.也就是 stop sb (from) doing sth的结构?
...rn spread out as far as the eye could see.
/
Inflation could fall back into single figures as early as this month.
/
Their forefathers had come to this island as far back as five hundred years ago.
对这种结构，只有把第二个as当作介词理解才可以吗？如果这样，那还可...
老师好，Laboratory rats and mice live up to 40 percent longer than usual when fed a diet that has at least 30 percent fewer calories than they would normally eat but that otherwise contains all necessary vitamins and nutrients.请问老师，第二个划线处为什么不是t...
1.Beijing has established numerous high-tech industrial parks and incubators aimed at promoting technologies.这里的分词短语aim at是做定语吗？我最开始认为的是high-tech industrial parks and incubators也可以发出aimed at这个动作，此处aimed at的作用就相当于谓语...
... 45 million Turkeys,who will begin making their irreplaceable contribution to our Thanksgiving celebration, so take it easy turkey.1) represents America's 45 million Turkeys， 可以把America's 替换成 American 吗？ 总是搞不清America's 和 American的区别？（就如搞不清China's 和...