①Mary is much friendliest person in the class.                 

②Which city is largest, Beijing or Guangzhou?                 

③ Jack is naughty. Mike is very naughtier than Jack.             

④London is the bigger city in Britain.                        

⑤ June is hot. But August is much hot than June.                       

than,  biggest,  smaller,  hotter , much，the,  hottest, bigger

    Some planets are near to the sun.  The sun is not a planet.  It is a star.  It is very hot.  It is also very big.  It is much than any other planet.  In fact the sun is biggest thing in our solar system.

    The Earth is the third planet.  The hottest planet is the first planet.  The Earth is one of the planets.  It is very near to the sun.

The Earth is biggest of the four planets.  It is bigger the first, second and fourth planets.  The first planet is smallest.  It is much than the Earth.

①He is tall than I am.                                     

② She is a little thiner than she looks.                         

③ Bob is heavier than any other boys in the class.               

④ My brother's trousers are longer than my.                    

⑤ It is one of the longest story that I have ever read.             

a．It's got about fourteen million people.

b．It's in the south of China.

c．Yes，I am.

d．It's in the west of America.

e．It's eighteen thousand three hundred kilometres.

①Where's Guangzhou?               

②How long is it?                    

③Are you a teacher?                  

④Where's San Francisco?              

⑤How big is it?