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问题 be going to与be going to be的区别

He says he's going________ a computer programmer in the future.a.to do b.become c.be  d.to be这个答案选择d，老师我想问下：to后面为什么还要加一个be动词。谢谢！这个be 动词在什么情况下要加！

问题 by reducing decisionmaking to one man’s whim,中to o

Some think that by reducing decisionmaking to one man’s whim, he has left the Saudi monarchy only a bullet away from collapse.

问题 Would have done结构的用法

...思一样吗？3, 章振邦，新编高级英语语法195页If I had won the lottery, I would have bought a yacht next year.请问里面完成体（Would have bought.）换成不定式的一般体Would buy可以吗？含义有没有差别？

问题 过去分词done与现在分词的被动完成式having been done有何区别

非谓语动词中，过去分词done与现在分词的被动完成式having been done有何区别？例如这句话中： Heated, the metal expands. 能不能说having been heated 不是都表先后发生，且是被动吗？

问题 引导时间状语是By time 和when 中的主语的用法

...来时，现在完成时表将来完成时。例如在两个例子中1.By the time he retires,Stewart will have worked in this company for more than thirty years. 在这个句子中可以用has worked吗？2.Ask her to come and see me when she has finished her work. 

问题 关于in with by作“用”的用法问题

...或者具体的方式和手段用in来表达。譬如：we will send out the report in separate email.（如果in后面接方式或者手段则要加限定词或者形容词吗？比如in an email）cut with knife。(为何这里不用加限定词？）他们三者之间是否可以互换？

问题 notice sb do sth 与 notice sb doing sth 的区别与比较

您好，请教一道题。 Did you notice volunteers _______(help) a man cross the street ? 答案给的是help，为什么不是helping呢？[抱拳][汗]

问题 直接引语引述句的主语是代名词时能否倒装

“12 gold pieces, only 12 gold pieces,” calls out the man.这是直接引句的倒装，动词放在主词前面。没有问题。Off they went. (他们走了). 主词为代名词，不能倒装为: Off went they. (误)问题: “20 gold pieces for a turkey! Are you crazy?” they all say.这个...

问题 may as well与might well的用法区别

Your girlfriend looks quite upset, you _______ tell her the truth.A. may as well            B. have betterC. might well               D. needn't to老师，请问这题是...

问题 引导定语从句的by which time可以换成in which吗

The next Olympic Games are in two years, ________ I will be a university student.答案是 by which time。我想问：可以用 in which 吗？which 作关系代词指代先行词 two years. I will be a university student in which(two years).

问题 have a key to do sth（不定式是状语还是定语）

I have a key to open the door. 1. 这句话不定式如果理解为定语的话，后面是不是应该加一个with？ 2. 如果不加介词的话，应该理解为目的状语，但是静态动词后面可以跟目的状语吗？ 谢谢!

问题 辞书质疑(35)：《英语常见问题解答大辞典》关于lit不能用作定语

...，就有用 lit 作定语的用例，参见该词典的COLLOCATIONS FROM THE ENTRY：对于这个问题，各位老师怎么看？

问题 倒装语序

Never in my wildest thoughts would I thought I'd ever have an emperor penguin to care for. It's just amazing.这句话的正确语序是怎样的？

问题 as if后面的虚拟语气中用was与were的区别

学习中遇到的例句是这样的。He writes as if he is / were / was left handed.解释中说道：is 表示他应该真的是左撇子，were 表示他不是，只是冒充左撇子。到这里我都可以理解。但是又说，was 则表示不一定——可能是，也可能不是。was 怎...

问题 three-year-old 这类结构中的连字符可以省略吗

He has a three-year-old son.I saw a three-year-old in the room.请问专家：以上句子中的 three-year-old 中的连字符可以省略吗？