3. 有时一般将来中的will含有"愿意"的意思，而用将来进行时则只是单纯地谈未来情况。如：Mary won't pay this bill. 玛丽不肯付这笔钱。(表意愿)

　　Mary won't be paying this bill. 不会由玛丽来付钱。(单纯谈未来情况)

e.g. 汤姆明天将正在割草. __________________________________________________

汤明天愿意割草._____________________________________________________

巩固练习：

1. (1) The train _______________（leave）at 9:10p.m., so we can catch it.

(2) The Greens ____________________(leave) for Hong Kong by plane tomorrow.

2. (1) Look at the heavy clouds! It __________________(rain). Let's go home hurry, or we will be caught in the rain.

（2）It___________________( rain ) heavily outside now. You'd better stay in the house.

3 .(1) When he __________(return) from the USA, I will invite him to our school.

(2) I don't know when he ______________(return) from the USA, so I will call him to check the time.