that 指物,one 既可指人,也可指物.that可代替可数名词单数和不可数名词,而可代替可数名词单数和不可数名词,而one 只能代替可数名词. The book on the table is more interesting than that on the desk.A box made of iron is stronger than one made of wood. .⑧表示倍数的比较级有如下几种句型:A) A is three(four ,ect.) times the size(height ,length ,width, ,ect.) of BAsia is four times as large as Europe. 亚洲是欧洲的四倍大.The new building is four times the size( the height) of the old one.这座新楼是那座旧楼的四倍大.这座新楼是那座旧楼的四倍大( 四倍高)。 。B) A is three(four ,etc) times as big(high ,long ,wide ,etc .) as B. .C) A is three(four ,etc .) times bigger ( higher ,longer ,wider, ,etc .) than B. .Your school is three times bigger than ours,你们的学校比我们的学校大三倍.,你们的学校比我们的学校大三倍.