11.5 be going to / will
?
用于條件句時(shí)， be going to　表將來(lái)
　　　　　　　 will　表意愿
　　If you are going to make a journey, you'd better get ready for it as soon as possible.
　　Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror.