问题 插入语是个句子的时候是可以放在句末省去逗号的吗

...ass period it is late.句子里的it is late 在句子里算什么？可不可以理解为 for each class period it is late是插入语？An essay not submitted in class on the due date, for each class period it is late, will lose a letter grade.如果是的话，插入语是个句子的时候是可...

问题 副词since可以用作后置定语修饰名词吗

 In the days since, the Shanghai Composite has barely budged, rising 1.2 per cent this week.在本句子中，since 是作为副词作后置定语修饰名词 days 吗？还是修饰介词短语？类似的例子有哪些？

问题 That's后面可以接复数名词吗

比如下面的对话：Cashier: That’s two notebooks and three pencils.Customer: How much is it?Cashier: It’s three dollars and five cents.这里为什么在that’s后面接复数名词呢？

问题 What可以在名词性从句作表语吗？

I don't know what it means to teach students. I don't know what it feels to teach students. I don't know what this thing is. 这三句对吗？

问题 duty if required,是否可以看作插入语

A：What does the estimate include?B：Estimates include merchandise, packaging and shipping, duty if required, any taxes and insurance.

问题 终止性动词leave可以连用since状语吗

Mr. Wang  has left for Australia since 50 years ago.答案给的是has left，但我认为leave是个短暂性动词，不应该改成has been away吗？请老师赐教。

问题 for在句中的含义，可以用其他介词代替吗

The government relies on taxes from the food industry for more than half its budget.

问题 I work in my spare time这样表达可以吗

问题 than引导的定语从句

He has more pictures than _____ expected. 这里可以填什么？is, are还是不填？填完动词可以补上主语it/he/they吗？如果去掉more，是不是只能补上he is? The medicines are effective as ____ expected.这里可以填什么？填完动词可以补上主语it/they吗？这...

问题 破折号可以用在表语提前的句子中吗

it is difficult to be sure about radiation damage-a person may feel perfectly well

问题 might could may可以表示理论上的可能性吗

问题 too...to...句式中的不定式可以用完成式吗

问题 By the end of last month可以搭配哪些时态

问题 可以举例一些where引导抽象地点的例句吗（最好不要网上常见的...）

问题 定语从句先行词可以是that吗？

...这个 what 是什么词性，是关系代词吗？我理解的是关系词可以做成分，但是我的认识里关系词，只在定语从句中，不知道对不对？ 我感觉选 C 也行吧，that 作为 buy 的宾语，其后的定语从句关系代词 that 做了宾语省略了，问问...