问题 语法填空（could和would的区别）

The researchers took measurements on days when the volunteers stood,and when they sat around.When they looked at the data,there were some striking differences.Blood sugar became level after a meal much quicker on the days when volunteers in the study stood compared with the days they spent in a chai...

问题 独立主格可以单独出现吗（经常会看到一些计算机的提示语出现类似独立主格的句子）

独立主格可以单独出现吗？经常会看到一些计算机的提示语出现类似独立主格的句子，如 target located 是独立主格吗？还是 located 做后置定语修饰 target?

问题 介词短语能做状语修饰名词吗？

...cted.....是介词短语做状语修饰前面的consequences吗？还是作定语？介词短语能后置做状语修饰前面的名词吗？

问题 表示在某场合occasion前用介词on与at

表示在某场合 occasion 前用介词 on 的。如： The friends call each other on occasion. 朋友们有时相互通通电话。 She ran away from home on several occasions. 她几次离家出走。 On this occasion, as it happens,the engine started immediately. 这一次碰巧引擎...

问题 much as 放句首的语法功能

...资料说much as可看作是固定词组，作连词，引导让步状语从句，表示“尽管，虽然”。much as I like economics, I like sociology much better.请问这里的much as “正如”也表示让步 

问题 这里为什么用are不用were

答案居然是are，我填的是were，上述的答案解释合理吗？？

问题 难句分析（when, as之间有逗号）

It's difficult to keep the format fresh when, as a tried and tested formula, it's now approaching staleness.这个句子怎么分析，特别是when, as, 两个逗号。

话题 three times bigger than

话题 long time no see

话题 for the short time

话题 have a hard time

话题 in the time of

话题 it is time that...

话题 Long time no see!

话题 have the time for