1st April is a day to be careful, or you could easily get tricked by someone. It’s April Fool’s Day, a day when people traditionally like to try to make a fool of someone else and laugh at them. (来源：英语博客 http://space.englishcn.com)

There are lots of theories surrounding the origins of the day, but one explanation is connected with the change in the calendar in the 16th century, which meant that 1st April was no longer the beginning of the year. Those who still celebrated the New Year on 1st April were called fools. (来源：英语麦当劳－英语学习门户 EnglishCN.com)

So what kind of pranks do people play on April Fool’s Day? Well, there are lots of simple tricks that you can play on your friends. For example, you could wear a black sweater and pull a piece of white thread through it, so that people try to pull it off. You could change the time on someone’s alarm clock so that they’re late for work. Or glue a coin to the floor and see how many people try to pick it up.

(来源：英语e问e答 http://ask.englishcn.com)

All these are small-scale practical jokes which you might play on one other person or a few people. But there’s also a tradition of large companies attempting to fool a lot of people. For example a burger restaurant once claimed that they were introducing a left-handed burger! (来源：英语麦当劳www.EnglishCN.com)

In particular, the media often try to make people believe something which is not true. Newspapers publish some ludicrous stories every year, although some of them are actually true. It’s entertaining to try to guess which stories are true and which are fake. In the April Fool’s stories, they often include a clue to the fact that it’s a joke. For example the name of an ‘expert’ quoted in the article might be an anagram of ‘April Fool’.

Radio and television programmes have also fooled many people by broadcasting reports which are untrue. One programme announced the invention of an amazing new weight-loss product - water which contained minus calories!

And one of the most famous hoaxes ever was broadcast by the BBC itself in 1957! A very serious news programme called Panorama reported on the poor spaghetti harvest in Switzerland, and showed pictures of farmers picking spaghetti from trees! Hundreds of people were taken in and wrote to the BBC asking how to grow their own spaghetti. (来源：英语问答中心 http://ask.englishcn.com)

    1. 强调句

It was lightening that caused the forest fire last year.正是闪电引起了去年的那场森林火灾。

We hurried back to school lest/ for fear that it (should) rain. 我们匆匆忙忙地赶回学校，生怕天会下雨。 (来源：英语交友 http://friends.englishcn.com)

　　3. 比较级the more…the more

The more time a person spends on his work,the less time he has to play. 一个人花在工作上的时间越多，花在玩耍上的时间就越少。 

　　4. This subject is far more difficult than everybody has previously expected. 这门课程比每个人以前预料的还要难得多。

　　5. more than…/rather than…

A political figure's success depends more on external factors than his own characteristics. 一个政治人物的成功与其取决于他个人的特点，不如说取决于外部因素。

　　6. 让步状语

Whether you believe him or not， you have to make the decision. 无论你是否相信他，你都必须做出决定。 (来源：英语聊天室 http://chat.EnglishCN.com)

　　7. no matter what/ who/when/how…

No matter how hard he tried,he couldn't persuade his friends to give up the adventure. 无论他怎么努力，都不能说服他的朋友们放弃冒险。

He decided to carry out the plan in spite of the protest from his parents. 他决定不顾父母的反对执行他的计划。

I broke my glasses so that I couldn't see clearly what happened. 我打破了眼镜，以至于看不清当时发生了什么事。

　　10. The density of the star has become so great that it may explode at some time. 这颗恒星的密度如此之大，以至于它会在某一时刻爆炸。

As we expected(正如我们所预料的那样)/As is well known(众所周知),

the project was finished successfully on time. 项目成功地提前完成。

　　12. 形式主语

It's no doubt that correct decisions made today will have a good effect on future. 毫无疑问，今天做出的正确决策将对未来有很好的影响。 

    13. 形式宾语

Many people find it important to keep a good living habit. 很多人认为保持一个良好的生活习惯非常重要。

　　14. 宾语补足语

The new electronic techniques make possible the effect that has never been created before. 新的电子技术使得一种从未有过的音响效果成为可能。 

　　15. 倒装句

Not until recently did we realize that language was closely related to culture. 直到最近我们才意识到语言与文化密切相关。

　　16. Under no circumstances should you hesitate to offer your opinion as it is. 在任何情况下你都应毫不犹豫地说出你真实的想法。 (来源：英语聊天室 http://chat.EnglishCN.com)

　　17. 比较状语

such … as …

Such people as you described can hardly succeed in nowadays. 像你描述的那种人在当今社会很难取得成功。

be different/ similar … in that…

Robots are different from automatic machines in that they can be reprogrammed to do another job. 机器人和自动化机器的不同之处在于它能被重新编程完成其它的任务。

　　19. 宾语从句

people hold different attitudes as to… 人们对于是否应该用动物做实验持不同的态度。people hold different attitudes as to whether animals should be used in experiments.

　　20. 并列句

 …not only…but also…

Sports can not only benefit our body,but also contribute immensely to mental health. 运动不仅对我们的身体有益，而且还极大地有助于精神健康。

　　在竞争激烈的商务世界，你需要占领所有的优势。并且无懈可击的英语能让你独占鳌头。你认为太难实现吗？一点也不！看一下你的竞争对手常犯的商务英语错误列表并马上占领领先地位：

Personal vs. Personnel

密切注意这些单词的拼写和重音！

Personnel是个名词意思是公司的职员　例如:Our company has the best personnel in the industry.重音落在单词的末尾。

Personal是个形容词意思是私人或是个人。I'm requesting a day of annual leave for personal reasons.重音落在单词的开头。

如果你不仔细，你就可能说成personal reasons而不是personnel reasons.

　　Executive

executive是公司的管理人员。如果你正在向访客或是客户介绍你公司的高层executives，那就要注意单词的发音喽！

如果你将重音落在u上，那么executive马上就听起来象execute- 将某人杀死或判死刑。

　　Present? Presentate? Presentation?

　　当你作presentation时present信息。Present是个动词意思是将某物呈现给别人。presentation是常在商务中推出新信息时使用的一种形式。许多人－就算是一些英语的本土人士－认为presentate是presentation.的动词形式。

不要犯同样的错误！
　　I look forward to hearing from you.

　　Headquarters and Information

　　许多的英语学习者把headquarters这个单词的s漏掉而在information.后加上了s。Headquarters是个单数名词意思是公司的总部：I'm going to headquarters this weekend to meet with the CEO.

Headquarters是个微妙的单词因为它是以s.结尾的。看起来象是个复数名词！但是漏掉s会把headquarters变成个动词，to headquarter.

　　在另一方面，许多学习者在information后加上了s。大多数人的理由是如果他们需要很多的信息，他们就需要把这个单词变成复数，例如，I need informations on overseas study programs.但是信息是个不可数名词（它没有复数名词）。你只需要说，I need some information. ...