这 + Classifier + Noun
这 (zhè) is a demonstrative pronoun and determiner meaning "this." It is used to point to something nearby or currently being discussed, and it must be followed by a classifier before a noun in standard usage. It can also stand alone or with a classifier to refer to something without naming it explicitly.
这件衣服多少钱?
Zhè jiàn yīfu duōshao qián?
How much is this piece of clothing?
这个想法真不错,我们可以试试。
Zhège xiǎngfǎ zhēn búcuò, wǒmen kěyǐ shìshi.
This idea is really good; we can give it a try.
你看这本书,写得特别好。
Nǐ kàn zhè běn shū, xiě de tèbié hǎo.
Look at this book; it's written especially well.