We add carbon dioxide to the air when we burn (things),especially fossil fuels.
Fossil fuels are energy sources formed from the remains of (plants) and (animals) that lived million of years ago.请问书上说"表示总称的数通常不可数"，那为什么句中的 thing , plants用...
My brother has been in the United States of America for the past few years.1.既然是过去几年在美国,表示现在并不在了,那为什么用现在完成时呢?而不是过去完成时呢?2.few不是代表否定意义的"几乎没有"吗? 难道这里不应该用a few吗?
I
don't want children taken away from parents and when you prosecute the parents
for coming in illegally which should happen you have
to take the children away.It
was torture what they did to us. 怎么分析和理解
which should happen ？
There are many copper mines in the state of Arizona, ______ contributes
significantly to the state's economyA which fact B whose fact 到底是哪一个啊？ 有的说A 有的说是B?
...分not until和not unless呢?Government cannot inject a single dollar into the economy until it has
first taken that same dollar out of the economy.这个句子until可以换成unless吗？还有本句应如何理解呢，中文意思看不太懂，什么是政府把钱拿出来才能把钱放进去...
British popular opinion of the tour was muted, most viewing it as in poor taste to disrupt the first year of George VI's reign.本句中的it是否是形式主语指代to disrupt不定式分句？还是it指代tour而不定式分句作状语？如果作状语的话是什么状语？希望老师解...
... only 71 child deaths occurred, while 35,388 deaths were
in adults. Yet in the countries assessed in Africa,
an estimated 43,375 deaths due to passive smoking were in children compared
with 9,514 in adults.我查了原文，没有错别词。Yet in the countries assessed in Africa, 我无法理解as...
The banker-customer relationship is that of debtor and creditor-who is
which depending on whether the customer's account is in credit or is overdrawn.请问这个句子中 who 的先行词是什么呢？新概念的解释是 creditor-who 中的-为连接符，这个 who 后面引导的是定语从...
stoop本身就有弯腰的意思，你可以说： He stooped to pick up the bag. 同时，你也可以说： He stooped down and pick up the bag. 两句话意思应该是一样的，但同样的stoop，却用法不太一样，如何选择？或者说还有啥我不知道的区别？还请老师们...
I was at my parents’ house ringing the doorbell，praying that dad would answer the door. I was afraid if mom answered that l would give up and tell her instead.这里的answered that的that指什么呢？
we need a room
twice larger than this one.答案是主谓宾，但想请问一下twice larger 难道不是room的宾补吗？His teacher
advised him to take up the piano.答案是主谓宾补，为什么不是双宾（the piano不是直接宾语吗？）要怎么样区分这三者的关系啊？
请问老师：1. whether引导从句，如果连接两个独立句，是否前面和后面都必须使用whether？比如or后面的whether能否省略？2.下面的句子正确吗？It is unclear whether both
the men and women are young or whether
only just the men are young.
...会再次使用暴力。When you’re bringing up kids, you have to take the good with the bad. 养育孩子时，你不得不接受好的和不好的方面。When you have finished your meal, clear the table. 吃完饭把桌子收拾干净。You have to plan ahead when you’re thinking of going to...