找到约 60000 条结果

问题 分析句子中过去分词的句法功能

Vertebrate EPRS contains two distinct aminoacylation domains, connected by a non-catalytic linker, and first joined in a unicellular ancestor ~800 Mya.这里的connected与joined分别修饰什么，在句子是什么语法成分?

问题 这里是否该用复数organizations

Do you know anything about this food pyramid?What does it show? Many professional sports teams have recently added a new member to their organization(这里我感觉应该用复数吧)-a nutritionist.

问题 关于foundation的用法疑惑

老师，请看这句话：Learning English Welll requires a good English grammer foundation.学好英语需要良好的英语语法基础。我的疑问：这里的foundation表示"基础"时，为什么要用冠词a来修饰？难道"基础"还能带复数？存在"一个...

问题 为什么要加多一个as

It will give you twice as much as energy as a candy bar.It will give you twice as much energy as a candy bar.不可以改成第二句吗？为什么呢。

问题 从句成分的疑惑

They tried to restrict access to___they believed to be dangerous areas.A, whatB, whichC, thatD, everywhere答案选择D。1. 请问A为什么不行呢，由what引导的宾语从句，在从句中做they believe的宾语2. 可以把they believe当成插入语吗3.选择D，是不是把to everywhere...

问题 作定语用three-eyed还是 three-eye（复合形容词中为什么回-ed）

我们都知道，一次两日游  a two-day trip，一个八岁的女孩 a eight-year-old girl.但今天在美剧看到这句话，一只三眼的乌鸦 a three-eyed raven.请问这里为何不直接用three-eye而偏偏用eyed,请问这两者有什么区别？

问题 可以使用一般过去时代替进行时吗

As she (  ) the book, he ( ) asleep.A. read...was fallingB. was reading...fellC. was reading...was fallingD. read...fell几个疑问：答案是B，但是：1）fall asleep是短暂动词，所以不能用进行时吧？2）但是我认为D也是正确的。理由：《英语常用词疑难用法...

问题 关于 any, some 的一道习题

No hurry. Let's see there is _____left.A. anything elseB. something importantC. nothing elseD. any other things参考答案是 B，可学生以为 A 也是正确的，请老师为学生解惑。谢谢。

问题 将来时间表示法选择

We can't go for a picnic. It  ______ this afternoon.A. rains     B. is going to     C.  is raining      D. is to rain选哪个或那几个，为什么？

问题 being 和 as 有何区别

举个简单的例子：Being a student, you should work hard. As a student, you should work hard. being 和as应该都是“作为”的含义，那它们的本质区别又是什么呢？还望专家老师们赐教！

问题 what的名词性从句的用法

l  built a hospital in what is called a waste land. 这句话中为什么in的后面用what？是怎么看出它是名词性从句的？又为什么不是介词提前的宾从用which呢？

问题 翻译问题

Early this decade he was jobless for a year and recalls how back then, there were “a thousand people applying for every McDonald’s job”.（译 ：在本世纪初，他失业了一年，回忆起当时，“每一个麦当劳的职位都有1000人申请”。）decade字典里没有“世纪”...

问题 关于worth后加名词的用法

请问老师，今天看到一道改错题: My uncle is a person worth respect. 答案是把respect改为respecting，但是worth后面不是既能接名词又能接doing吗，比如worth a visit和worth visiting，那这里respect不可数名词感觉也对呀。麻烦老师解答，谢谢!

问题 if done 是什么用法

Some think it is a crime if done without a property owner's permission.本句摘自北师大高中英语必修第三册p22。请问if done 是什么用法？是固定搭配吗？if done 是 if it is done 的省略用法。

问题 to的用法

But as TechRadar noted on Tuesday, there are a few catches-namely that Moflin's 5-hour battery life doesn't really hold up to, say, a cat's "battery" reserves.这句话hold up to怎么理解，这个to是相对于意思吗？，这个say是插入语吧，怎么会插在这两个词之间，感觉很...