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I was about to leave when it began to rain. 我正要离开，天突然下雨了。 【易错提示】 be about to do sth.不与具体的表示时间的状语连用，可以与when构成固定句式。 【思维拓展】 when表示此意义时，还用于以下句式： be doing...when... be on the point of doing...when... be on the way to...when... had just done...when... He was walking in the street when he caught sight of a car racing towards him. 他正走在街上，突然看见一辆汽车朝他冲了过来。 He was on the way home when a stranger stopped him. 他正在回家的路上，这时有个陌生人拦住了他。 She was on the point of jumping off the building when a policeman came. 她正要跳楼，这时来了一名警察。 I had just gone to bed when the telephone rang. 我刚要上床睡觉，这时电话响了。 即境活用16 (2017·上海模拟)I felt somewhat disappointed and was about to leave________something unexpected happened, which captured my attention. A．unless B．until C．when D．while [解析]be about to do...when正要做……突然。 [答案]C 2．It is said that this boy, who had a great gift for languages and persuasion, is the father of the Manchu people.据说这个男孩就是满族人的祖先，他具有语言天赋和很强的说服力。 (1)It is said that...表示“据说……”的意思，it为形式主语，that引导主语从句。相当于people say that...。该结构还可以转换成sb. is said to do...结构。 (2)但要注意根据动词不定式和is said动作之间的时间关系，使用不定式的一般时、进行时或完成时。 John is said to be one of the best teachers in the school. ＝It_is_said_that John is one of the best teachers in the school. 据说约翰是这个学校最好的老师之一。 He is said to have written a new book about workers. ＝It_is_said_that he has written a new book about workers. 据说他写了一本有关工人的新书。 【思维拓展】 It is thought that...大家认为…… It is believed that...人们相信…… It is hoped that...人们希望…… It is reported that...据报道…… It is wellknown that...众所周知…… It is generally considered that...大家认为…… It is supposed that...据推测…… 即境活用17 It is________that Japan has overtaken German in industrial production. A．reporting | 
