...作为主语而flying作为定语来看待，原句改写为：Planes that are flying can sometimes be very dangerous.意思是：正在飞行中的飞机有时可能会造成危险。由此可以判断flying是现在分词。（2）flying planes整个短语看作主语，这时主语的结构就是...
...的，所以最后一道题选择D。6.What is the professor's opinion about the future of the Gonur-depe site? A. She believes it would be a mistake to alter its original form.B. She doubts the ruins will deteriorate further.C. She thinks other sites are more deserving of re...
...讲的进行体表示短暂可预知结束的习惯，不同。3. If fish are swimming by green sea plants, they'll turn green.请问老师，这种是习惯还是事件，可不可以去掉will改为 If fish are swimming by green sea plants, they turn green.4. 我总是对 带有条件状语、时...
... enthusiasm of farewells compensates the relationship for the harm that is aboutto be done to it by separation. It seems to be a characteristic obligation of many social relationships that each of the members guarantees to support a given face for the other members in given situations. To pre...
...ent exactly as planned. 一切都按计划顺利进行。If asked, he lies about his age. 有人问起时，他就会谎报年龄。He started, as if awakened from some dream. 他显得一惊，仿佛从梦中惊醒。我想请问一下，since后面可接过去分词吗？谢谢！
...试着造了几个句子，当然，不知道对不对。
These things are important for your avoiding this risk.
I'm used to his smoking all day.
If you want your speaking English fluently，you 'd better not take it seriously while speaking it.
My not sleeping wouldnt bother my...
The amazing thing is that every atom in your body came from a star that exploded. And, the atoms in your left hand probably came from a different star than your right hand. 请问红字部分应该如何理解?以下是我的思考：为了便于理解我改写成And, the atoms in your left han...
And as discussion of language acquisition becomes more substantive, it moves to assumptions about the language organ that are more rich and domain specific, without exception to my knowledge.请问：without exception to my knowledge是什么意思？
If there were as many girls as there are boys at the party, the situation would be quite different. 请问这是虚拟语气吧？为什么 if 从句中一个用的是 there were，后面一个用的是 there are 呢？
Behavioral synthesis tools are starting to appear that automate the process from about step 2 onwards.请问这里 that 后面的部分不是从句，automate 是动词。这里that后的内容作为什么语法理解呢?
To begin with, what I intend to stress is that we areaboutto start our next lesson in Classroom 8 of the Teaching Building at 10 a. m. next Friday. 请问这里的 to begin with 可以改成 beginning with 吗？为什么？谢谢专家！
... point of collapse. Fossil (化石) bones that have caved in on themselves are thus a sign that the animal once had the bends. 请专家老师翻译一下最后一句：Fossil (化石) bones that have caved in on themselves are thus a sign that the animal once had the bends.