在 (zài) and 正在 (zhèngzài) can be used as [auxiliary verbs](auxiliary_verb "wikilink") to express that an action is *ongoing* or *in progress*. This is often the equivalent of *present continuous* in English, which is how we express that an activity is happening *now*. You can use 正在 (zhèngzài) instead of just 在 (zài) to put a little more emphasis on an action that is *in progress **right now***. Structure ---------
Subj. + 在 + Verb + Obj.
or
Subj. + 正在 + Verb + Obj.
Examples --------
- 她 看 书。zài kànshū.She is reading. - 妈妈 打 电话。Māma zài dǎ diànhuà.Mom is making a phone call. - 谁 里面 洗澡?Shéi zài lǐmiàn xǐzǎo?Who is taking a shower in there? - 阿姨 正在 打扫 我们 的 房间。Āyí zhèngzài dǎsǎo wǒmen de fángjiān.The cleaning lady is cleaning our room right now. - 昨天 晚上 七点,我们 吃饭。Zuótiān wǎnshang qīdiǎn, wǒmen zài chīfàn. Yesterday at 7pm, we were eating dinner. - 老板 开会,没有 时间 见 你。Lǎobǎn zài kāihuì, méiyǒu shíjiān jiàn nǐ.The boss is currently in a meeting. He doesn't have time to see you. - 我 现在 上班,不方便 离开。Wǒ xiànzài zài shàngbān, bù fāngbiàn líkāi.I am working now. It's not convenient for me to leave. - 我们 正在 上课,请 你 等 一会儿。Wǒmen zhèngzài shàngkè, qǐng nǐ děng yīhuìr.We are in class right now; please wait a moment. - 你 正在 开车,不 可以 玩 手机。zhèngzài kāichē, bù kěyǐ wán shǒujī.You're driving right now; you can't play with your cell phone. - 你 给 我 打 电话 的时候,我 正在 跟 朋友 打 游戏 。Nǐ gěi wǒ dǎ diànhuà de shíhou, wǒ zhèngzài gēn péngyou dǎ yóuxì.When you called me, I was playing video games with friends.
There is no need to worry too much about when to use 在 (zài) or 正在 (zhèngzài), since they basically mean the same thing. 正在 (zhèngzài) usually shows that the action is in progress (*right now*). "在 (zài) + Verb" is more commonly used than "正在 (zhèngzài) + Verb," but both are fine to use. See Also -------- - [Aspect particle "zhe"](Aspect_particle_"zhe" "wikilink") - [Expressing actions in progress (full form)](Expressing_actions_in_progress_(full_form) "wikilink") (more advanced usage) Sources and further reading --------------------------- ### Books - [Basic Patterns of Chinese Grammar](Basic_Patterns_of_Chinese_Grammar "wikilink") (pp. 41-2) [→buy](http://www.amazon.com/gp/product/1933330899/ref=as_li_ss_tl?ie=UTF8&tag=allset-20&linkCode=as2&camp=217145&creative=399373&creativeASIN=1933330899) - [Chinese: An Essential Grammar, Second Edition](Chinese:_An_Essential_Grammar,_Second_Edition "wikilink") (pp. 60-1) [→buy](http://www.amazon.com/gp/product/0415372615/ref=as_li_ss_tl?ie=UTF8&tag=allset-20&linkCode=as2&camp=217145&creative=399369&creativeASIN=0415372615) - [Integrated Chinese: Level 1, Part 1 (3rd ed)](Integrated_Chinese:_Level_1,_Part_1_(3rd_ed) "wikilink") (pp. 209-10) [→buy](http://www.amazon.com/gp/product/0887276385/ref=as_li_ss_tl?ie=UTF8&tag=allset-20&linkCode=as2&camp=217145&creative=399369&creativeASIN=0887276385) - [New Practical Chinese Reader 2 (新实用汉语课本2)](New_Practical_Chinese_Reader_2_(新实用汉语课本2) "wikilink") (pp. 218-9) [→buy](http://www.amazon.com/gp/product/7561911297/ref=as_li_ss_tl?ie=UTF8&tag=allset-20&linkCode=as2&camp=217145&creative=399369&creativeASIN=7561911297) [Category:A2 grammar points](Category:A2_grammar_points "wikilink")