...d during the day they are still singing. Singing is a costly behaviour and it takes energy. So by increasing their song output, there might be some costs of energy. ”我对其中的Singing is a costly behaviour不理解，behaviour 不是不可数名词吗？它前面怎么可以用不定冠词呢...
...样一句：Teachers and parents all think the book is a very good idea. It will teach students how to be a good person in the online world. It will be a guide for teens using the Internet and keep students away from bad sites.请大家讨论一下，这里的 It will be a guide for teens using 对...
B：Well, you should have put details of your market research spending and the interest you will have to pay on the bank loan.A：Great thinking, Sally. I forgot those important items.对话A里的forgot，这里为什么用过去时态，而不是用一般现在时态？
...！下面句子中的 as 后面的主语可以省略吗？Lewisisn’t quite as fast as he used to be. My car’s not as reliable as it used to be. Group therapy is not as popular as it used to be. We all know that life is not as easy as it used to be. The fishing out there isn...
Left, until now, to odd, low-level IT staff to put right, and seen as a concern only of data-rich industries such as banking, telecoms and air travel, information protection is now high on the boss's agenda in business of every variety.这句话中：1）两个过去分词短语中的词：odd, ...
It might be argued that wealth, __inherited or earned, is not sufficient to give real powerA.either B.whether我想的是whether（wealth is） 答案是A说并列成分 其实感觉两个形容词作补语也行 不需要 加
(1) Itis a ______ golden watch.(2) The story must be ______, for I read it in the newspaper.(3) Give your______ name , please.(4) He is a ______ friend.(5) This story came from ______ life.real 和 true 的区别： real 强调人或事物真实的存在，而不是想像的或虚构的；true 则...
...理笔记时应该用色彩和图片代替文字?哪句翻得比较好？2.It's important that itis arranged for your particular needs of that subject, and in the most user-friendly way you can.怎么翻译?3.take the stress out of studying翻译成摆脱学习压力,还是释放学习压力好一...
By 1860, the settlement of the American West along with timber shortages in the East converged with ever-widening impact on the pine forests of the Great Lakes states.请问老师，这句话的主谓宾是什么，怎么翻译？
...的知识对管理复杂的社会是必不可少的。Scribes administered great empires by writing, their knowledge of recording and retrieving information essential to governing complex societies. 老师，我的疑问是后半句是什么结构，essential前面为什么没有being呢?
"She is
exploited erotically and aesthetically by her brother-in-law, a video artist
who becomes obsessed with her passive body (and).. sinks ever deeper into a
psychosis-like condition expressed through the 'flaming trees', a symbol for a
plant kingdom that is as enticing as itis dangerous," accor...
...成时以及过去完成时等多种时态形式。如：There was a hospital
nearby. 附近有一家医院。There has been no
rain this week. 这个星期一直没下雨。There will be
something you can enjoy. 会有你喜欢的东西。3.
连用情态动词there be结构有时可以与情态动...