在句子I’ll go home as soon as I have finished my homework.与 Please lend me that book if you have finished reading it.能不能改成. I’ll go home as soon as I will have finished my homework. Please lend me that book if you wi...
下面的4道习题要求处理好真实条件句中的动词形式问题：1. If she promised/ has promised (promise) to be here, she will certainly come. 2. If he said (say) that, he must be a fool. 除了横线上的标准答案，...
A robot arm from the Endeavour will grab the telescope and hold it while the astronauts make some necessary repairs. 我的疑问1：while 从句可以用一般将来时吗?可以还是不可以说明原因。我的疑问2：如果主句不用将来时，那么主句和从句的谓语动词都...
（答案上说选A，我感觉有歧义，一道选择题，没上下文）When Alice woke up, she did not know how long she ( ) there.A. had been lyingB. had lain请问老师，为什么选a，选b就一定错误吗？这题严谨吗？我先说一下我的理解：假设：x（过去的过去...
...故事由三部分组成。第三部分关于Dolly的叙事使用了什么时态？起到了何种表达效果？1. Donald
Wryson, in his crusading zeal for upzoning, was out in all kinds of weather,
and let’s say that one night, when he was returning from a referendum in an ice
storm, his car ski...
He is the man visiting us yesterday.He is the man who visited us yesterday.这两句是否都正确呢？我知道现在分词做定语是表示“主动”、“同时”。那这个地方的用法是否有问题呢？Do you know the people coming to the party tomorrow?这个句子我判断应该...
...过去的虚拟还是对现在的虚拟?He talks as if he had known John since boyhood. 请问老师这句话中，虚拟语态是对过去的事情进行虚拟还是对现在的事情进行虚拟呢？现在有两种说法：对过去的虚拟；对现在hsa know John since boyhood的虚拟。
...都是虚拟语气，所以日常对话中是不是单独出现一句过去时态的句子，就有可能是表示虚拟语气？2. If you flunk out, the university authorities are
obliged to see that you return to your home immediately.夏济安评：“这里you
return的return也是虚拟语气...
在语法书上看到两个句子。第一个是： I didn't know it until you told me .第二个是 : I had heard nothing of what had happened until you told me .为什么第一个主句用的是过去式而第二个句子用的是过去完成时呢？这对我的影响好大。。我觉得第...
prefer后接that从句或接it if...从句，从句谓语动词通常用过去式或should+动词原形，表示现在或将来的情况。如：I'd prefer that
he came next week.I'd prefer that
he (should) come next week.I'd prefer it if he
came next week.I'd prefer it if he
(should) come next week...
M: I agree with your proposal at the meeting this morning. It was a good one.W: You should back me up then, when I needed it.Q: What does the woman mean?A) Her back hurt during the meeting.B) She agreed that it was a good meeting.C) The proposal should be sent back.D) His support would have helped t...
3D printing services are coming into American people’s life. The UPS Store is a nationwide retailer (零售商) that provides copying and other services. The UPS Store recently put 3D printers in three of its independently-owned stores. Burke Jones owns one of the stores in San Diego.“The demand...