请教一下各位老师，以下两个句子：I need a pen to write with.The chair looks rather hard, but in fact it is very comfortable to sit on.都是“名词+to+vi+介词”的形式，为什么一定要用介词？第一个to do是做目的状语吧？第二个是做方面状语？谢谢。
... it is 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点?
...送到编辑邮箱susan@sws.com。(2015陕西卷阅A)It was in the
1930s, when he was an editor of the literary magazine of Southern Methodist
University in Dallas, Texas. 那是在20世纪30年代，当时他在位于德克萨斯州达拉斯城的南卫理公会大学（SMU）任文学杂志编辑...
...that I had felt like crying about.She is devilish like Miss Cutter, that I used to meet at Dumdum.为什么以上2句that可以引导非限制性定语从句呢？ 上面2句可改成who或which吗？即This Brett, who/which I had felt like crying about.She is devilish like Miss Cutter, who/which I ...
Surface electrodes are those that are placed in contact with the skin ofthe subject. Also in this category are certain needle electrodes of a size that prevents their being inserted inside a single cell which a microelectrode is.Surface electrodes, other than needle electrodes, vary in diameter from...
...ramme, has
welcomed the arrival of a rare black rhino calf (犀牛幼崽). When the tiny creature
arrived on January 31, she became
the 40th black rhino to be born at the reserve. And officials at Port Lympne
were delighted with the new arrival, especially as black rhinos are known for
being difficu...
Once the fire was going , he laid stones on the fire. When hot , he
placed them in an empty oil drum with kau kau(sweet potato), corn and greens.问：学状语从句的省略时，省略的前提之一就是从句的主语必须和主句主语相一致且有be动词时就可以省略，可本句当...
...y
their parents outweigh its benefits
Firstly educating children
in households is not as good as in schools in the quality.There are many
teachers who have edifying skills and serval years pedagogical experiences, which
is more helpful for students.For instance, students have some question in t...
Be careful when doing sth是一个常用句型，意思是“当做某事时要小心”。如：我的问题是：这个 when doing sth 是由什么变来的？下面两种理解，哪个对？Be careful when doing sth= Be careful when you are doing sth.Be careful when doing sth= Be careful when yo...
She felt suitably humble just as she had when he had first taken a good look at her, hair waved and golden, nails red and pointed.1) as she had 中的had不懂，完整句子是什么呢？2) hair waved and golden, nails red and pointed 如何分析成分呢？
—The sports meeting to be held next week, we must get ready for it. 运动会将在下周举行，我们得做好准备。
—Sorry. So many exercise-books to check, I really can't afford any time. 对不起，有这多的作业要批，我真的抽不出时间。
两个句...
...句子：Dean Koontz, famous for his suspense thrillers, uses a pen name when he
wrote mysteries.在跟学生解释的时候，对于famous for his suspense thrillers这部分内容所充当的句子成分不确定，我认为是同位语起到补充解释Dean Koontz的作用，但是在百度百科...