If the overseas students intend to achieve the goal of speaking fluent Chinese language, the important thing they should do when they learn Chinese language is to practice more oral languages frequently used by Chinese people. The structure …砸了 is one of the frequently used expressions, which is to mean something has not reached the expected result, something failed. For example, 唉,我期中考试考砸了. Generally speaking, it is placed after verbs but it can be also used alone in some cases. 甲:那笔买卖谈得怎么样了?该签合同了吧?乙:签什么合同?砸了.
It often happens that something is in certain degree more than we expected. If you want to express the situation, you can use 再…不过了, which indicate that it has reached the extreme. You may often hear Chinese people say 如果你能帮我买火车票那就再好不过了. It carried the similar meaning with it would be perfect if… in English.
If you ever heard Chinese people quarrel with each other during the process when you learn to speak Chinese in China, you must have heard 再…就不客气了 which is applied to point out to the other party that if a wrong action is continued or repeated, the speaker will take some severe measures. For example, 你有话好好说,别满嘴脏话,再骂人我就不客气了.
If we add some prepositional phrases before 不客气, we usually mean to point out the objects. One thing you should know is that this structure carried the tone of warning somebody. We can say这次我先放过他,要是他再对顾客这种态度, 我就对他不客气了.
Foreigners may also learn 再A也没有… when they learn Chinese online free. It is used for comparison, meaning the former is not as high as the latter in the degree or not as much as the latter like 打车再贵也没有买车贵.