【正文】 it is … before … Group discussion Presentation trial。 誤： We have obtained his approval to use his car. 正： We have obtained his approval of our using his car. 析： approval 后通常不接不定式，若語(yǔ)義上需要，可 用 of doing sth。生死攸關(guān)的 He mitted a vital error. 他犯了一個(gè)致命的錯(cuò)誤。 Calcium is beneficial to our bones. CF: be advantageous to 對(duì) …… 有利 be beneficial to 對(duì) …… 有益 這兩者的區(qū)別可以歸結(jié)為 advantageous和 beneficial 的區(qū)別。 Unit 2 Reading 2 Aspirin is a medicine that was __________ in 1897. It has saved and brought relief to millions of people’s lives. It is made from a chemical called _____ and was first sold as a tablet in 1900. This was the first medicine to be sold as a standardized ______. It works by reducing fever and pain. It is now ___________ for reducing potential heart attacks, strokes and cancer. Many reports have been ________ about how aspirin can improve people’s health. published。 chew on 1. 咀嚼 [(+on)] He was chewing on his meat as he found it hard to swallow. 2. 斟酌，仔細(xì)考慮 He took my offer after chewing on it. 仔細(xì)考慮后他接受了我的提議。 (3) vt./vi. (使 )循環(huán)； (使 )流通 a machine designed to circulate warm air 為使暖空氣環(huán)流而設(shè)計(jì)的機(jī)器 slow narrow calm warm dry dirty better lower 1) The train ____ down to half its speed. 2) The river ______ at the point. 3) I couldn’t _____ her. 4) Please ______ the milk. 5) Nothing ______ sooner than a tear. 6) Don’t ______ your hands, children. 7) He ______ his voice not to wake her. slowed narrows calm warm dries dirty lowered quiet thin idle empty yellow busy better wrong grey Please make sentences with the following words: 8. … and in 1977, a study carried out in the USA showed that the chemical ASA in aspirin could prevent a stroke. Lines2627 1) Chinese astronauts ____________ the mission in space exploration successfully. 2) Once a plan is made, it should __________ no matter how difficult it is. have carried out be carried out carry out。 painful sickness cast a gloom over the young girl. 病痛使那個(gè)年輕姑娘情緒低落。 carry out。 application。 application 12. Second, it was difficult to produce penicillin in the ample quantities needed to be effective. effective 有效的 effective resistance 【 電 】 有效電阻 take effective measures 采取有效措施 The description of the fire is very effective. 對(duì)大火的描述極其生動(dòng) efficient有效率的 。 散布 習(xí)慣用語(yǔ) distribute...over ... 把 …… 配給到（分配到 , 散布于） …… distribute sth. to 把某物分（配 , 發(fā)）給 …… distribute sth. among 把某物分（配 , 發(fā)）給 …… distribute books among the students 把書(shū)分給學(xué)生 distribute seeds over a field 在田間播種 distribute books to students 給學(xué)生發(fā)書(shū) only has aspirin proved