It's getting colder day by day．天气一天天冷了起来。
The boy is getting better day by day．那孩子一天天好了起来。
◇ day after day意为“日复一日”、“一天又一天”，表示一个重复（周而复始或循环重复）的动作或事件。该短语可作主语和状语。如：
Day after day went by, and still no message arrived．日子一天天过去，仍然杳无音讯。
I have to do the work day after day．我得天天做这项工作。
◆ deal with; do with; get rid of
◇ get rid of表示“处理”，侧重“消灭；摆脱或清除”；deal with和do with侧重“处理”的手段、方法或方式。do的后面可接宾语，deal的后面不接宾语；do with常与what连用，deal with常与how连用。
［练习］
①If they are not coming, we can ＿＿＿ the tickets．
②How did they ＿＿＿＿ matters of this sort﹖
③What did you ＿＿＿＿ the broken car﹖
④Mr Zhang wrote a book ＿＿＿＿ life in England．
⑤We should ＿＿＿＿ the weeds in the fields．
(Key: ①get rid of   ②deal with   ③do with   ④dealing with   ⑤get rid of)