1.开头
Look at thi picture.The picture how that...From thi picture, we can ee...A i hown in the picture...A i een in the picture...
2.衔接句
A we all know, ...A i known to all,...It i well known that...In my opinion,...A far a I am concerned,...Thi ight remind me of omething in my daily life.
3.结尾句
In concluion...In brief...On the whole...In hort...In a word...Generally peaking...A ha been tated...