有个句子原句是：This place must have been prosperous when people were still living here.能这样说吗？This place must have been prosperous when people had lived here.请问：had lived here 是曾在这里住过还是已经住在这里？
[There are two activities in this class, climbing trees and crossing
the river.][There are two phrases in the book, "move forward" and
"go ahead".]请问同位语可以像上面这两个句子这样用吗?是不是必须写成[There are two activities, climbing trees and
crossing the river, in the c...
...know he called me “darling” twice, and
the other time was when he said good-bye. 我知道他叫过我两次“亲爱的”，另一次是在说再见的时候。【注意】这类句子，充当主语的为“时间名词”或者“代词”（指代“时间”）。表语从句实际上是...
... am the grateful for it. Without your help, it's impossible to acquire good achievement. Your positive energy and help have been an inspiration to me. My mom told me that you are really busy these days. Please take good care of yourself. Hope I can see you soon. ...
In Save Money: Good Food, she visits a different home each week and
with the help of chef Matt Tebbutt offers top tips on how to reduce food waste, while _____(prepare) recipes for
under 5 Yuan per family a day.问：此横线处应填preparing ,说是状语从句的省略，那我要问while作...
...embled those found in the faeces of the untreated Caesarean-born infants, this quickly changed.老师您好，这句话though作为插入语，然后that引导一个宾语从句，从句里those后又省略了作为主语的关系代词以及助动词be，抛去这一切的话，那么主句就是...
..., but it could just as easily have been
arsenic, silicon, and iron. To us, this looks like a machine, but on this
planet, it could be an organism. 这句话有个as easily，但只有一个as，是不是后面省略了一个as从句？能不能补全呢?
...lman of the Harvard Business School believes that
people will look back on this period as“a golden age of business management in
the United States”.刘老师，as“a golden age of
business management in the United States”是否应该分析为宾语补足语呢？感觉look back on this period...
比如:在本周一时He said he would finish homework this wendseday.如果现在时间是周二还没有到周三这句话是否要把would改为willHe said he will finish homework this wendseday.但这样的话，是否有语病呢？时态上？如果现在时间是周四，当然就只能用wou...
...ported that Chinese courier
services will deliver about 12 billion parcels this year.但老师说写成Based on the report, Chinese courier
services will deliver about 12 billion parcels this year.是错的，因为过去分词Based on the report作状语，他逻辑主语就会是主句主语Chines...
...的状态（aspect）。试比较下列两个句子：1）I saw Bro. Fan
this morning.2) I have seen Bro. Fan this
morning.这两句话在语法（grammatical）上都是正确，都是“我今早见过凡哥”的意思，但其暗示（implication）是不同的。第一句，可以暗示this mor...
Consequently, nothing seems good or normal that does not accord with
the requirements of the free maket (就是这里).请问这里的the free market表示半泛指还是特指？另外:The roof of houses leaks easily.The roof of a house leaks easily.The roof of the house leaks easily.这三句话...