...吗？为什么B不对呢？
【答】表示“通过做......”,
用by doing something或者through
doing something 都可以，含义相同。例如：
He learned to cook through [=by]
watching his mother in the kitchen . 他通过在厨房里观察母亲做饭来学习烹饪。（摘自中国...
...状态）：一颗倒下的树。实际上，fallen一词，已经被彻底形容词化了，它其实就是个形容词。又如： a retired worker 一名退休的工人。retire是“退休”，不及物动词，无法表被动。a
retired worker = a worker who has retired。现在，语法书...
...entification, with criminal sanctions available for service providers that do not adequately enforce age verification techniques.中文翻译：此外，陈的小组委员会还可以考虑一个英国议会先前批准的系统，该系统要求所有想要在线观看合法色情内容的成年互...
Textbook publishers connect professors, instructors and students in
ways that alternatives, such as open e-textbooks and open educational
resources, simply do not.这是个什么句型，前半句理解，从alternatives往后就看不懂了。
...review of the literature of the field it is clear that all the approaches adopted to study the phenomena of SLA so far have one thing in common: The perspective adopted to view the acquiring of an additional language is that of an individual attempting to do so.疑惑：请问黑体句里从句中...
Americans will generally do business with the company they think gives them the highest value for the lowest price, not based on personal relationships.此句应该是两个句子，在they前面是不是应该用逗号隔开呢？
America also forged an international consensus on the openness of space, ensuring all countries with the means to do so can utilize orbital space for scientific, commercial and military purposes.请老师帮忙分析一下，谢谢！
—Do you have any idea what Paul does all day?—As I know, he spends at least as much time playing as he __________.A. writesB. does writingC. is writingD. does write答案B.上句可以简写成As I know, at least, he spends as much time playing as he does writing.问题是：he spends as much ti...