The oral expression 还真没看出来is often heard in daily communication, which is used to show to discover what was ignored in the past. When you attend to school to study in China, teachers would tell you that it can also be written as 真没看出来and没看出来, sometimes carrying the tone of doubt or irony. For example, when one person say我这件衣服花了两千多块呢, another can say是吗？真没看出来.

During the process when overseas student come to study in Mandarin learning courses in China, they may also often hear 还真是which is to think what the other party said is right. Sometimes, it is used to agree with the other party while sometimes it is applied to show what the other party said is right after proved by the fact although it doesn’t occur to the speaker himself. The following dialogue might be helpful. A:你们看，他的耳朵会动. B: 是吗？我看看. 哎，还真是.

When hearing sentences with the pattern 好好儿的, you should know it is to show somebody or something should be in a normal state. Sometimes this expression carries the tone or pity. Sometimes, it is used in a sentence to scold and interrogate. For instance, 好好儿的一幅画，让孩子给撕坏了， 真可惜！

If you intend to show the thing has been finished or solved, you can use the expression 好了. In addition, teachers would tell you that it can be used to stop or prohibit the other’s certain speech acts. For example, 好了,文章写完了，你检查检查吧.

Another important expression often emphasize is 好嘛,which is to show surprise or be out of one’s expectation or to reveal what the other party implied. The content of surprise is followed by this phrase. To point out directly what the other party implied. You can say好嘛, 这么薄的一本书六十多块钱哪！