Unit 2This is my sister,重难点精析精练,典例】Those are his three friends. 【精讲】这四个单词都是指示代词。this (这个), that (那个)是单数形式;these(这些), those (那些)是复数形式。通常this/these指离说话人较近的人或物;that/those指离说话人较远的人或物。指示代词既可以单独使用,也可以与名词连用,精练】 ( )1.Tom, _ is Sally. _ is my good friend. Nice to meet you, Sally. Athis; He Bthis; She Cit; She Dshe; This ( )2.Are these your friends? Yes, _ are. Athis Bthat Cthese Dthey,B,D,)3._ dogs are yellow. _ are my dogs. AThose; They BThey; Those CThat; Those DThis;