的（ de ） :of a noun or a pronoun may be used toshow possession, the structural partical的 must be used between the attributiveand the central word , e.g nǐ de hùzhào lǎoshī de shū wǒ de hùzhào wǒ mèimei de shū tā de hùzhào fēiyǎ de shū
Question with the interrogative particle 吗 （ ma ）• nǐshì xuésheng ma ?• tā shì mǎláixīyà rén ma?• nǐ búshì lǎoshī ma?• A simple question is formed by adding the interrogative particle to the end of a declarative sentence,either affiramative or negative.
The negative form• wǒ shì lǎoshī --------wǒ búshì lǎoshī• wǒ xǐhuān hànyǔ-----wǒ bù xǐhuān hànyǔ.• Usually,the negative is formed by adding 不 (bu) before the verb
The tones of 不• When 不 stands alone,it is pronounced in the fourth tone.when followed by a fourth tone,it becomes a syllable of the second tone and its tone-mark has to be given accordingly
Question with the particle 吧 (ba)nǐ bú shì xuésheng ba ?nǐ shì mǎláixīyà rén ba ?nǐ bù xǐhuān hànyǔ ba?“ 吧” question will be used when speaker already has a certain estimation but is still not quite sure about the thing he is asking and expects the listener to confirm it.