主谓一致记忆口诀 单单复复最常见，集体名词谓用单。 如若强调其成员，复数谓语记心间。 有些名词谓常复，people, police即这般。 主语单数后接介，谓语单数介无关。 many a作主语也如此，谓语动词应用单。 or、nor、but also、there be，近主原则挂嘴边。 背单词的好方法 随时随地背单词 不知不觉背单词 By the middle of the 20th century，hunting whales for profit had nearly wiped out many whale species.In 1973，the U.S.set up the Endangered Species Act.People were no longer allowed to hunt them in the U.S.waters.In 1982，the International Whaling is illegal worldwide. 10 Last September，it was announced that nine groups of humpback whales are no longer endangered.Four groups are still endangered and a fifth are threatened. link...to 将……和……连接/联系起来 【归纳拓展】 be linked to 和……有联系 link up (with) 连接；结合；有联系 link...with 用……把……连接起来；联系 join...to 把……与……连接/联合 connect...to 把……连接到…… connect...with 把……与……联系/连接起来 be connected with 与……有联系 关系代词定主语，谓语根据先行词判。 不定式短语、动名词，主语从句谓全单。 时间、货币与距离，谓语多单复少见， rest，means，following等，意义决定其复、单。 none，all，half of等，of之宾语定答案。 The number of them is growing particularly faster in the Southern Hemisphere like Tasman Sea and Coral Sea.And the number of humpback whales in Hawaii has made an amazing recovery.In 1966，there were fewer than 1,500 Jack      in the lab when the power cut occurred. A. works    B. has worked    C. was working    D. would work —Excuse me, which movie are you waiting for? —The new Star Wars. We        here for more than two hours. A. waited    B. wait    C. would be waiting    D. have been waiting