T：Animals can do many things, look, this woman can't see, she is blind, this girl can't hear, she is deaf.

T: Dogs can do so many things , they are useful.( 通过课件，单词卡教授生词 blind ,deaf, useful)

之后带学生做一个游戏，我说单词，学生指图片

T: blind , deaf, firemen .

Get the students to point to the correct picture .(学生指 firemen 时，教授 这一生词)

3.Watch the video for the second time and learn the main sentence