3、percent of...作主语时, of后如为不可数名词,谓语动词用单数形式; 如为可数名词复数形式,则谓语动词用复数形式。 4、increase the rate from three …
第一组：百分数当名词用，后面跟of。. Ten percent of us are girls. 我们中的百分之十是女生。. Only 10 percent of the land was under cultivation. …