全新版大学英语综合教程2 unit 4 (自己精心制作).ppt

Perhaps you envy me for being able to work from home on the computer. I agree that the Internet has made my job a lot easier. I can write, submit and edit articles via email, chat with my colleagues on line and discuss work with my boss. With a click of the mouse, I can get all the data I need and keep up with the latest news. But then, communicating through the Net can be frustrating at times. The system may crash. Worse still, without the emotional cues of face-to-face communication, the typed words sometimes seem difficult to interpret. ? * * * at times: sometimes Examples: She has been away from her home for about a year. At times she wishes she had never left. He went on listening to her, at times impatient and at times fascinated. Collocations: at a time 每次，每一次，在某时 at all times 在任何时候，经常 at any time 随时 at one time 一度，过去曾经 at the best of time 在情况最好时候 take in: absorb (sth.) into the body by breathing or swallowing Examples: The earth takes in heat and light from the sun. Fish take in oxygen through their gills. spit: send (liquid, food, etc.) out from the mouth (used in the pattern: spit sth. (out) (at/on/onto sb\sth.)) Examples: The baby spat its food out on the table. He took one sip of the wine and spat it out. spit out 吐出 说出 Please bite and hold the cotton ball tightly in place. Dont spit it out until half an hour from now spit on 向…吐唾沫 spit upon 对……表示侮辱；向……吐唾沫 spit at 向…吐唾沫；对…表示藐视 They spit on what I said. symptom: 1) sign of the existence of sth. bad Examples: High interest rates are a symptom of a weak economy. They regard the increase in crime as a symptom of a more general decline in moral standards. 2) change in the body that indicates an illness Examples: A cold, fever and headache are the usual symptoms of flu. If the symptoms persist, it is important to go to your doctor. nightmare: a terrifying dream Examples: Tom didn’t eat fish because it gives him nightmares. Watching horro