[4] Identifying objects.辨别物品 

46. What are these? 这些是什么？ 
47. Those are books. 那些是书。 
48. Where are the books? 那些书在哪儿？ 
49. There they are. 在那儿。 
50. These are my pencils. 这些是我的铅笔。 
51. Where are your pens? 你的那些钢笔在哪儿？ 
52. They're over there. 在那里。 
53. Are these your pens? 这些是你的钢笔吗？ 
54. Yes,they are. 是我的。 
55. Those are mine. 那些是我的。 
56. These are your books,aren't they? 这些书是你的，对不对？ 
57. No,they aren't. 不，不是。 
58. They're not mine. 不是我的。 
59. These are mine,and those are yours. 这些是我的，而那些是你的。 
60. Those aren't your pens,are they? 那些钢笔不是你的，对吧？