00:00 Opening
00:07 (Definite) 我在教室上课。Wǒ zài jiàoshì shàngkè.
                      (I'm having class in the classroom.)
         (Negative) 我不在图书馆读书。 Wǒ búzài túshūguǎn dúshū.
                      (I'm not studying in the library.) (Definite)
                        她在餐厅吃饭。 Tā zài cāntīng chīfàn.
                      (She is eating in the restaurant.)
         (Negative) 她不在家吃饭。 Tā búzài jiā chīfàn.
                      (She is not eating at home.)
         (Definite) 他们在健身房运动。 Tāmen zài jiànshēnfáng yùndòng.
                      (They are exercising at the gym.)
         (Negative) 他们不在公园打球。 Tāmen búzài gōngyuán dǎqiú.
                      (They are not playing ball in the park.)
00:45 Do more practice!
         --- 教室jiàoshì (classroom)
         --- 餐厅canting (restaurant)
         --- 公园gōngyuán (park)
01:14 Q：你在图书馆读书吗？Nǐ zài túshūguǎn dúshū ma?
             (Are you studying in the library?)
        A (Definite)：对，我在图书馆读书。Duì, wǒ zài túshūguǎn dúshū.
                           (Yes, I’m studying in the library.)
        Q：他们在商店买饮料吗？Tāmen zài shāngdiàn mǎi yǐnliào ma?
             (Are they buying drinks in the store?)
        A (Negative)：他们不在商店买饮料。他们在餐厅吃饭。 Tāmen búzài shāngdiàn mǎi yǐnliào, tāmen zài cāntīng chīfàn. (They’re not buying drinks in the store; they’re eating in the restaurant.)
01:32 Do more practice!
          --- 你nǐ (you) / 图书馆túshūguǎn (library) / 读书dúshū (study)study
          --- 他们tāmen (they) / 商店shāngdiàn (store) / 买饮料mǎi yǐnliào (drinks) / 餐厅cāntīng (restaurant) / 吃饭chīfàn (eat)
          --- 你nǐ (you) / 台湾Táiwān (Taiwan) / 学中文xué Zhōngwén (learn Chinese)
          --- 你们Nǐmen (you) / 图书馆túshūguǎn (library) / 看书kànshū (read) / 公园gōngyuán(park) / 跑步pǎobù (run)
          --- 陈月美Chén Yuèměi / 宿舍sùsh (dormitory) / 睡觉shuìjiào (sleep) / 滑手机huá shǒujī (scroll the phone) 
          --- 姐姐jiějie (older sister) / 学校xuéxiào (school) / 上课shàngkè (attend class) / 家里jiālǐ (at home) / 听音乐tīng yīnyuè (listen to music)