年夜学英语测验精读:第四册(UNIT8) community n. the people living in a particular area considered as a whole; the area itself社区(居夷易近) endeavo(u)r n. effort, attempt勉力 vt.试... /
2010-06-08 / 查看
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11.27时态同等-动词的时态 11.27时态同等 1)如果从句所论述的为真理或相对稳定的毕竟,则用现在时。例如: At that time, people did not know that the earth moves.那时,人们不晓得地球是动的。 ... /
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