...zing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers.在句子最后using前面是不是应该加by，因为是通过已知的的密度。
He was too much of a coward to tell the truth even to his closest friend.想问老师们，这里to tell the truth做什么成分？有人说是结果状语，有人说是补语，我不是很理解，请老师帮忙解答一下。even to his friend又做什么成分呢？
She left the keys
behind her at home.的句子成份，尤其是her一词的成分是什么？如果写成句子 she left the
keys behind at home.去掉her一词，或者She left her keys at home.可以么？是正确的么！这三句话有什么区别呢？
The vision that you glorify in your mind, the ideal that you enthrone
in your heart—this your will build your life by, this you will become.曹老师好，弟子请教曹老师此句句子结构怎么划分？尤其破折号后面的内容。谢谢老师。
The manager ____ workers how to improve the program since 9:00. A. has told
B. is telling C.
has been telling D. will have told 提供答案为C，但是在没有上下语境的情况下，A也是可以的，所以该题不算严谨。我期盼更多其他专家老师对此的详...
...，这样需要大量阅读，还是词典里查它的用法？He fell to the ground, breaking his leg.（..to break his leg.为什么不可以）Where can we get some sickles to cut the rice with(这里为什么有with)?（...cutting the rice with?可以这样吗）两个句子都是非谓语短语...
...Conservationists speculated that a "lake effect" may have caused the birds to mistake the sprawling solar farms for bodies of water. (www.latimes.com—Can solar farms and wild places coexist in the American West? 2020/06/02)个人感觉这里的may have caused更像是站在过去的立...
...llow
+ 宾语”后面的动词不定式作宾语补足语）。例如：
They don’t allow smoking in this hotel.
他们不允许在宾馆里抽烟。（摘自《韦氏高阶英汉双解词典》p.56）
We don’t allow / permit smoking in the
lecture room. 我们不允许在演讲厅里抽烟...
She grabbed her bag and ran out of the door. 她抓起包就跑出门去。英语可以这样说吗？“跑出门”可以说成 run out of the door 吗？out of 的意思应该是指从里面到外面，难道我们是从“门里出”跑出来吗？其实我们是从屋里经过门而跑出来...
1. It was because of my dream that I decided to go abroad and further my study.
为什么是 It was 而不是 It is？
2. It is the causes of poverty that governments should be dealing with,not the results of it.
为什么用 should be dealing with 而不是 should deal with ，难道...