优秀备选课件Function,Speaking,EverydayEnglish,Culturalcorner幻灯片.pptVIP

Function Giving reasons 1 Mencius believed that the reason why man is different from animals is that man is good. 2 Often, the reason why people are unhappy is that they do not have enough love. the difference of because, as, since and for Because is used when the reason is the most important part of the sentence or utterance. The because clause usually comes at the end. I went to China last week because I wanted to learn Chinese. As and since are used when the reason is already well known and is therefore usually less important. The as or since clause is usually placed at the beginning of the sentence. As the lesson had already started, we went down to the back of the room and occupied some empty seats there. Since John had already eaten, I made do with a piece of bread. For suggests that the reason is given as an afterthought. It is never placed at the beginning of the sentence and is more characteristic of written, rather than spoken English. I decided to stop reading — for it was very late and I wanted to go to sleep. 1. He found it increasingly difficult to read, ____ his eyesight was beginning to fail. (2006北京) A. and B. for C. but D. or 2. Jenny was very sad over the loss of the photos she had shot at Canada, ____ this was a memory she especially treasured. (2006广东) A. when B. where C. as D. if 3. A man cannot smile like a child, ____ a child smiles with his eyes, while a man smiles with his lips alone. (2006湖南) A. so B. but C. and D. for Speaking In 1875, Alexander Graham Bell built the first telephone that transmitted electrically the human voice. In 1936 Konrad Zuse built the first freely programmable computer. In 1884, Paul Nipkow sent images over wires using a rotating metal disk technology with 18 lines of resolution. In 1769, the very first self-propelled road vehicle was invented by French mechanic, Nicolas Joseph Cugnot. Eli Whitney patented the cotton gin on March 14, 1794. Louis-Jacques-Mandé D