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问题 数词+of等于量词的用法吗？

There were about eighty of them. Their ages were from about nine to twenty.老师，数词+of等于量词的用法吗；from about...等介词接介词短语的词有那些，多不多？

问题 it is related……用法疑问

Only a few years ago, it is related, as soon as envoys sat to dine, “stealth boasting” would start. 老师好，it is related在句子里是什么意思？

问题 did sightseeing是什么用法

Kristin Diehl conducted a series of experiments on photo-taking to find out whether people enjoyed it when they did sightseeing.过去式did后面为什么用ing形式（有did doing句型吗）？

问题 句子分析（where necessary）

However, if a business is heavily sales driven, it can make more sense to have a monthly operating plan, supplemented where necessary with weekly targets and reviews.where necessary在非限制性定语从句中supplemented的什么成份？

问题 介词短语作宾补转换成被动句

we discovered him above his company.我们发现他高人一等。改成被动句He was discovered to be above his company.为什么要把作宾补的介词短语变成不定式？

问题 为什么在with sb spaced 结构里，要使用被动态呢？

...o if you are getting together with members of your extended family who are not vaccinated, make sure that everyone is still following precautions.See one another outdoors with members of different households spaced at least six feet apart, avoid being indoors together and wear masks if you must be....

问题 主系表结构中现在分词作状语修饰的是谁

...饰was/is，还是修饰was sleepless/is busy/was always nervious ?例：the baby was sleepless crying all night.       everyone is busy doing the test and the test room is very quite.       she was always nervious seeing her boyfriend.

问题 英语难句分析

He accepted the sunshade, and lifting it over his head descended the steps and walked away.1. and lifting it 是做什么成分？2.descended 在这里怎么解释？谢谢！

问题 现在分词作状语

学生的考试题，Having viewed the landmark sights, many visitors felt the scenic area looked as beautiful as ever. 其中，having viewed是设空处，请教老师，这里用viewing可以吗？答案只给了having viewed。

问题 句子成分分析

He lost balance, staggered back against the rail and toppled over.老师您好，我想请教一下：这里的against the rail可否和“back"一起看作一个副词短语，还是说看作两个状语，都是修饰staggered呢？十分感谢老师的回答！

问题 How many 问句疑惑

How many people are in the car?请问老师：上面例句正确吗？好像一般都是说How many people are there in the car?

问题 伴随状语还是并列句

He smiled, stared at her hands for a moment, then walked away.把stared换成staring可以吗，作伴随状语？ 怎么区分并列句还是伴随状语啊，还有一个问题，好多人都说伴随状语不能用being done 这句话对吗?

问题 define

For others, it was an experience of drudgery. Making three meals a day, especially if your diners included small children, was tedium defined—an endless loop of eggs and beans and eggs and toast and beans and toast and eggs.  请问一下老师，这个was tedium defined是不是倒装了，是...

问题 with在句子的语法功能

Our present concern is with how easily and to what extent this cycle can be modified问：本句中，with的语法功能与作用，是否多余？

问题 while done之间的省略问题

While regarded as an impossibility, many people still want to carry out this plan. 老师好，我们知道while后可以省略“主语+doing”,请问老师，这个句子所包含的while用法正确吗？