疑難解析兩句

1. It is thought l billion people, that is half the world’s workers, earn their living by farming.

　　It is/was thought + that 從句是一固定句式。 

類似的結(jié)構(gòu)還有:It is / was reported / said / hoped / announced / believed / suggested ... + that從句,該句式亦可轉(zhuǎn)化為: People said / hoped /suggested...+that從句。

　　It is thought that the food in this supermarket is cheap.

　　It is known to all that the earth travels round the sun.

　　2. They became experienced at finding underground springs.

　　be/become experienced at sth / doing sth意為“對(duì)某事/做某事有經(jīng)驗(yàn)”。其中的at也可以用in;形容詞experienced(有經(jīng)驗(yàn)的)也可用作定語(yǔ)。例如:

　　She is an experienced teacher.

　　He is quite experienced in this kind of work.

【疑難解析】相關(guān)文章：

《天上的街市》的疑難解析11-25

《滿井游記》疑難解析03-17

《中國(guó)人失掉自信力了嗎》的疑難解析11-03

疑難04-29

對(duì)稱疑難與測(cè)量04-29

外科疑難病例討論05-01

禽病防治疑難問(wèn)答04-27

執(zhí)業(yè)醫(yī)師考試疑難題04-27

唐宋筆記疑難語(yǔ)詞考釋04-28

敦煌詩(shī)歌疑難俗詞考釋04-30