sugar (when) mixed with water,dissolves quickly.句子里连词when加上和不加的区别是什么?还有如下的句子：(if) given more attention,the tree could be gromn better~the secretary worked late into the night,(for)preparing a long speech for the president~句子里有连词和没有连词有区别么?
问题描述：
sugar (when) mixed with water,dissolves quickly.句子里连词when加上和不加的区别是什么?
还有如下的句子：(if) given more attention,the tree could be gromn better~the secretary worked late into the night,(for)preparing a long speech for the president~句子里有连词和没有连词有区别么?
答