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问题 estimate用法

...People(Authority) estimated that.      二，请问estimate可以像report、believe、think……一样改成The floods was estimated to have resulted……吗？

问题 increased与increasing的使用区别

There has been a significant improvement in life expectancy over the past few decades as a result of technological advances and increased personal wealth. 请问这句话中的increased可以换成increasing吗？它们有什么区别呢？

问题 过去进行时用法

On 8th July, 1947, an army officer reported a crash at the Rosewell base in New Mexico, USA. .... Within hours, people from the base were saying a UFO had crashed there. But later the same day,.......请问此处为什么要用过去进行时呢? 一般过去时可以吗? Thanks♪(･ω･)ﾉ

问题 excep/except for 使用辨析？

Melania herself shies away from the public eye, except for occasional appearances on behalf of her causes.梅拉尼娅本人也回避公众视线，除了偶尔代表自己的事业露面。这里可以用except吗？为什么一定要用except for呢?

问题 thus后面接过去分词还是现在分词

The oil spill has killed off billions of microscopic sea plants, thus threatening marine life further up the food chain. 这里为什么用 thus threatening，可以用 thus threatened 吗？ 

问题 这个介词短语做什么成分？

...见识。”老师，后面状语部分是状语，对前句补充？可不可以说是修饰something的非限定性定语从句的省略？

问题 关于appreciate作感激时的用法

请问老师，今天在一篇范文中看到这么一句话: You will be appreciated by these children.我记得appreciate作感激讲时一般接某事，接某人时一般作欣赏讲，那范文中这样的表达可以模仿吗？

问题 thus放在be前面还是后面

He became a confidante of Churchill, and thus was privy to some of his thinking. 这句可以改成这样吗？He became a confidante of Churchill, and was thus privy to some of his thinking. 

问题 定语从句中的插入语

He met a man who he was surprised to find out later was his English teacher.请问这个句子里的he was surprised to find out later是不是定语从句中的插入语？可以不用逗号隔开。

问题 simultaneously, at the same time, meanwhile比较

simultaneously可以和at the same time, meanwhile互换吗？

问题 in和during的区别

请问老师们，2021高考甲卷(2021全国卷Ⅱ)语法填空中有这么一句话：It was built originally to protect the city _____ the Tang dynasty and has now been completely restored. 参考答案上给的是in，我想问填during可以吗？谢谢老师！

问题 宾补动词用法

...elped1) make有用法：make sb sth，意为：挑选；任命。所以选A可以吗？2）elect有用法：elect sb (as) sth。意为：选为。所以B也可选吗？3）choose有用法：choose sb/sth as/for sth，这里的as/for不能省略，所以C错。那么A、B哪个对？

问题 句子成分疑问

...,还是修饰名词girls的呢？这里面过去分词invited作定语，可以把后面的to my party 理解成“形容词的补足语嘛”？同样的情况：The girl allowed to go home looks like a monster. 这里面 to go home 是作什么成分，修饰谁？

问题 关于since的歧义句

以前在高一课本看到的一句话：That's changed since I was here.网上说这句有歧义，分两种情况：1. That's changed since I was here last time.2.That's changed since I was here and I didn't see.老师们可以帮忙分析下吗？感谢！

问题 定语从句什么时候需要地点模糊化

There was a time when和There was a time where(定语从句地点模糊化)有什么区别？都可以吗？感觉填where或者when都说得通啊哪些名词需要地点模糊化？这些名词什么情况、用法、含义下被定语从句修饰是地点模糊化？