1.In the year of 1840,the Opium War broke out.
2.There are more books in their library than there are in our library.这题不确定是不是“there are”但肯定是有词在in our library前面的.这里比较的是两个图书馆的书不是两个图书馆.
3.He returned home after he graduated from college.
return 和back语意重复了,所以去掉back
4.We planned to meet just before sunrise,very early in the morning.这个中文叫什么从句不记得了.逗号后面very early in the morning 是对before sunrise 的补充说明.
5.The cause of the flood was due to the heavy rain in late spring.
两种改法,要不把cause去掉,变成“The flood was due to the heavy rain in late spring.”,或者把due to 去掉“The cause of the flood was the heavy rain in late spring.”.因为cause 本身就有原因的意思,后面用due to就重复了.
6.He was asked to repeat the sentence.
这个也是重复,repeat 和again重复了.
7.I play badminton equally as well as my brother.
这里考两点：重复和比较对象
句子想说的是我打羽毛球打得和哥哥一样好,比较的是打羽毛球这个事,而不是我和哥哥比较.所以应该改成：I play badminton as well as my brother does.后面要根据谓语动词的形式,加助动词,例如这里加了“dose”.
其次,是equally与as well as重复了.
8.It seemed to his friends that his attitude was of a puzzling nature.
9.These watermelons are large in size and sweet in taste.
10.He did not tell the truth honestly.
简洁原则,能用一个词就不要用短语.
11.There are a number of students who want to join the drama club.
12.He was kind enough to let me share the same umbrella with him.
share 和same重复了,去掉same.
13.Zhao was the person who was elected the representative of the class by the whole class.
14.At the present time I am taking the course of World History and in addition a course in geography too.
in addition=too,去掉一个.
15.The plane circled around the airport for about ten minutes or so and than disappeared and could no longer be seen.
or so=about,去掉一个；than 是不是打错了?是then吧.
16.What I am trying to say is that in my opinion he has not done his work very well and it needs improving.
用名词不用动名词,改improving为improvement
17.I would like you to consider the question of whether or not you will let our journal publish your recent article on women scientists in China.
有wheter后面就不用or not,wheter本身就有是否的意思.在平时说话里,wheter or not是ok的,可是在非常严格要求英语里,就不行.
18.Owing to the fact that he had missed many lectures,he was aware that it would be possible for him to fail the exam.
19.You must first work out an outline for your paper,and then after you have done that,you need to collect all kinds of material to support your point of view.
20.In that country violent death has become a commonplace thing,a thing that occurs every day.
become不用用完成式,这个词本身就有渐变的意思.
20题以后的,今晚回来继续看,还有不会的我要查书.请告诉我,这是不是GMAT或者LAST题?期待其他高手的补充,我喜欢这样的题,很有挑战性啊.