emissions「emission什么时候加s」
carbon emissions后面接复数还是单数
接复数，和emissions保持一致。
举例：
As countries strive to end energy poverty, their carbon emissions are likely to soar.
随着各国努力结束能源贫困，它们的碳排放很可能飞涨。
carbon
[英][ˈkɑ:bən][美][ˈkɑ:rbən]
音标：n.[化学]碳; （一张）复写纸; [电]碳精棒[片，粉]，碳精电极; 复写的副本;
解释：adj.碳的; 碳处理的;
emissions
解释：n.排放物( emission的名词复数 ); 散发物（尤指气体）;
prep-2-58 到底虚拟语气是怎么用的
你好，关于prep-2-58 到底虚拟语气：
If current trends continue, by the year 2010 carbon
emissions in the United States will soar to a level more than one-third
higher than were those in 1990, according to official projections.
(A) will soar to a level more than one-third higher than
were those
(B) will soar to a level more than one-third higher than
that
(C) would soar to a level more than one-third higher than
it was
(D) would soar to a level more than one-third higher than
those
(E) would soar to a level more than one-third higher than
they were
A.
复数those不能指代单数level，因此只能强制指代前句的复数主语emissions，那么，句子变成将level与emissions相比较，比较对象不对等
B.
正确。
C.
主语应该使用will，而不是would
D.
主语应该使用will，而不是would；复数those没有指代对象
E.
主语应该使用will，而不是would；复数they没有指代对象
句子结构：If current trend continue, … carbon emissions … will soar..., according to…条件主从复合句。条件状语从句如果使用一般现在时，主语应该使用一般将来时
祝学习进步
英语句子改错
1.Ought you **oke so much？
【解释】在you后面加to，这道题考查的是情态动词Ought to的用法，表示客观上的必须。这句话采用了翻译疑问句，更增强了语气，表示说话者不想让听话者抽那么多的烟。
2.If Fred didn't leave here before five,he mustn't be home yet.
【解释】把mustn't改为couldn't.这道题考查的是虚拟语气，If引导的从句采用了将来时，那么相对应的主句应该用could/would/might/should这四个情态动词中的任何一个+do.
3.I'm doing home.I didn't want to but I must, because my mom asked me not to go out after dark.
【解释】把must改为have to。这句话考查的是情态动词must与have to的区别。must解释成为说话者的主观情感，“自己必须....”，出于自愿。而have to表示客观上要求“不得不去做某事”，出于被迫，而非自愿。
4.after I've finished my course,I'll can speak English fluently.
【解释】去掉can。从句用现在时，主句用将来时。will与can不能同时出现。
5.I can be seeing the top of the tower in this bedroom.
【解释】把be seeing改成see。考查的是情态动词can的用法，表示“可以”。
6.He can't be working at this hour!
【解释】hour改为time/moment.情态动词can't be working表示对现在正在进行动作的否定猜测，所以时间必须是此时/此刻。
7.Mary Black ought to not be home by now.
【解释】把not放在to之前，考查的是情态动词ought to的否定形式，应该是ought not to。同时还应注意，这一类由两个词组成的情态动词或者半情态动词的否定形式：have to---haven't to/ don't have to, had better---had better not do, used to---usedn't to/ didn't use to。
碳减排英语
碳减排：carbon abatement
carbon sink : 碳吸存
reduce emissions：碳排放量
you can reduce your carbon emissions : 你可以降低你的碳排放量
1. 挪威政府并未明白指出碳减排计划的细节，许多人因此不安。
The government has not been specific about its plans to reduce emissions, and that is making many nervous.
2. 政府有了这些税收就可以免除在摊在碳身上的其他低效税，从而降低碳减排的成本。
Governmentscan use this cash to reduce other inefficient taxes, thereby cutting theeconomic costs of carbon abatement.
3. 不要介意于即使在今后十年这样一段时间里全球最严厉的碳减排也不能在最轻微的程度上影响冰融。
Never mind that even drastic world-wide reductions incarbon emissions over the next decade or so wouldn't have the slightest affecton ice melt.
带内杂散和带外杂散的区别
带内杂散和带外杂散的区别是一个在带内，一个在带外。根据查询相关信息显示：谐波和主波有倍数关系，杂散则不一定，可以把谐波算作杂散，杂散(emissions)有用频带以外的无用信号。
