本句式中 it为形式主语， that从句。It is likely that... ……是可能的。Sb./Sth. be likely to do... 某人/物可能干某事。She‘s very likely to ring me tonight. ＝It’s likely that she will ring me tonight. 她今晚很可能给我打电话。It‘s likely that it will snow tonight. ＝It is likely to snow tonight. 今天晚上可能下雪。

　　[1]　Ronaldo was ______ to win the 100－meter hurdle race, but he fell to the ground and missed the chance. A．possible

　　B．probable C．likely

　　Dmaybe

　　答案：C

　　解析：当 possible或 probable 做表语时，主语只能是事物或代词 it；而 likely 做表语时，主语可以是人，也可以是物。maybe 是副词，只能做状语，不能做表语。

　　2．It_is_believed_that before long the mix of nationalities will be so great that there will be no distinct major racial or cultural groups, but simply a mixture of many races and cultures.

　　本句用的句型是 It is believed that－clause。it ， that－clause。It be said/known/agreed/thought/supposed/reported＋that－clause. 此句型可转化成： (1)People say/know/agree/think/suppose/report＋that－clause. (2)Sb./Sth. be said/known/agreed/thought/supposed/reported＋to do.

　　①It is believed that Mr Smith is innocent.＝Mr Smith is believed to be innocent. 人们认为史密斯先生是无辜的。It is believed that Professor Johnson has finished his second novel.＝Professor Johnson is believed to have finished his second novel. 人们相信约翰逊教授已完成了他的第二部小说。

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