today i reviewed course ,so today i want to make some sentences.  

part 1 : am ,is ,are ,was ,were,will,to be

1. I am not fat  .
2. he is slim .
3. they are rich .
4. he was a student there years ago .
5. they were  singing all night .

part 2 : have,has,had,having 

1. I have a beautiful bag 
2. she  has a good figure .
3. he had finished his homework .
4. I am having a dinner now .

when I (am) making sentence ,I find it’s not easy ,I am afraid to make mistakes .especially on grammar . i don’t know the grammar .I want to learn (learning) the grammar quickly .

OK ,maybe be I am wrong . don’t afraid the grammar , just writing . write what you are thinking .