m4u1 grammar and usage.pptVIP

(2013湖南) If nothing ________, the oceans will turn into fish deserts. A. does B. had been done C. will do D. is done D (2013辽宁) We are confident that the environment ______by our further efforts to reduce pollution. A. had been improved B. will be improved C. is improved D. was improved B 2. 若主句谓语动词是一般过去时，直接引语变成间接引语时要调整时态。如下表： 直接引语 间接引语 直接引语 间接引语 现在时 过去时 现在进行时 过去进行时 现在完成时 过去完成时 过去时 过去完成时 过去完成时 不变 将来时 过去将来时 将来进行时 过去将来进行时 将来完成时 过去将来完成时 He said, “I’m a policeman.” He said that he was a policeman. He said, “I’m playing football now.” He said that he was playing football then. He said, “I have done my homework.” He said that he had done his homework. He said, “I saw a film yesterday.” He said that he had seen a film the day before. He said, “I had learned 3,000 English words by the end of last term. He said that he had learned 3,000 English words by the end of the term before. The geography teacher told us that the sun rises in the east and sets in the west. 谓语动词时态变化需要注意几点： The geography teacher said, “The sun rises in the east and sets in the west.” 1. 直接引语表述的是客观真理，变为间接引语时，时态不变 She says that she’ll never forget the days in the country. The children said, “We love this game.” They told us that they love that game. She says, “I’ll never forget the days in the country.” 2. 如果直接引语所表述的内容在目前和说话时同样有效，变间接引语时，时态可不变 3.主句谓语动词的时态是现在时态，在引述时，时态不变。 3. 指示代词、时间状语和动词也要做调整。如下表： 直接引语 间接引语 指示代词 this these that those 时间状语 now today tonight then that day that night this week last week yesterday five days ago tomorrow next week that week the week before the day before five days before the next day the next week 地点状语 here there 动词 come go “I don’t want to go sightseeing,” said ???? John. → John said that ____________ to go sightseeing. 2. The mother said, “I’m cooking.” →The mother said that ______________. 3. Daisy said, “I have bought a new computer.” →Daisy said that ______________ a new computer. Practice he didn’t want she was co