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问题 不定式和现在分词的区别(break one's neck to do/doing)

 I wish Sam would study harder, because I am breaking my neck to scrape up the money to keep him in college.You don't have to break your neck fixing this TV set: I really don't need it next week.为什么第一句用不定式，第二句用现在分词形式？

问题 it's easy to make friends you are rich是什么结构

...到一句话 it's easy to make friends you are rich,but a friend in need is a friend indeed.it's easy to make friends you are rich是什么结构，you are rich是定语吗？定语不是只能修饰名词么，看它在这句话里不像是修饰friends的，但是定语可以修饰整...

问题 现在时态表示过去的用法

...生动而使用现在时态吗？They are flying over the desert when one of the engines fails. 他们飞越沙漠时，一个引擎出了故障。请专家老师总结一下，到底在哪些情况下可以用现在时态表示过去，谢谢！

问题 spokesman,spokeswoman(发言人)后接什么介词

...： the spokesman for the Democrats 民主党发言人 但是可以用 of 或 to 吗？

问题 宾语从句可以嵌套状语从句么

... whole time at the prayer breakfast seems to be forgotten, on the same day of the prayer breakfast,”he said.that后面是worry的宾语从句，然后这个宾语从句又是一个as soon as 引导的时间状语从句，这么做可以么？还有类似的例子么？

问题 这里的“打算”用一般将来时还是过去将来时？

The government ______ to approve the use of widespread surveillance when the Justice Department took objections.A.is going    B.had been   C.was about   D.is coming这里的“打算”用一般将来时还是过去将来时？

问题 a short distace away作后置定语

句子：We compare it with the chemistry of the soil a short distance away.(it指的前文的一种化学物质，这里就理解为“它”就可以)请问老师：a short distance away是soil的定语吗？a short distance away算是名词吗？名词可以这样作后置定语吗？

问题 用逗号隔开介词结构是什么成分（同位语？插入语？）

We both came from hard-working families, of modestmeans but with strong work ethics.用逗号隔开介词结构是属于什么成分？同位语？插入语？麻烦老师讲解一下？

问题 which reminds me 的省略问题

这是个对话，想请教你，Which reminds me,是省略了前面的主句吗？Mild China 什么意思?And we also need to push the DVDs. Customers can get twenty percent off when they buy a guidebook and a DVD together.Which reminds me, did you bring that extra box of the “Mild China” DVDs?

问题 be joined by的意思

One of his friends rushed inside to call an ambulance, then he phoned Tracy's father,Bill Marsh. Bill raced to the hospital, where he was joined by Tracy's mother, Cory.She knew from the way the doctors talked that there was little hope. be joined by什么意思？与...会合吗？怎...

问题 标点符号(and therefore前面应该用逗号吗)

The quality of teaching can make a huge difference to students’ academic performance. and therefore, parents prefer to choose prestigious schools for children.请问老师，这个句子and therefore前面应该用逗号吗？还是说应该用句号 ，同时And要大写？

问题 with 短语在这个句子里面的成分不是很理解

The XRD patterns of both the samples were well indexed to the standard cubic CsPbBr3 phase, with no observable secondary phases。个人理解：with no observable secondary phases 有种补充说明的意思，难道是啥补充状语？

问题 英语句子翻译时的句子结构整合和重组

It estimated that the Chinese would need 1.17 billion square meters of housing for living annually on average from 2019 to 2030. 据估计，从2019年到2030年，中国人平均每年需要11.7亿平方米的生活用房。请问一下这样的翻译算不算是句子结构整合和重组？

问题 关于how/what一些问句的疑问

...的性质，第三个呢？另外第三个可以替换成What do you think of the weather? 都是要回答者对天气做出评价还是都是问天气怎样？

问题 描述已经已逝人物的身份或成功用什么时态

老师们，请问一下描述已逝人物的成果或者身份用什么时态？比如：Shakespeare is/was one of the most famous writers who has/had created more than ...plays.