关于”will”这一情态动词的用法，许多语法书籍并未给予充分的解释，以下将对其进行详细的阐述：
1.作为情态动词，”will”可以用来表达某种规律性、习惯性或典型性的行为特征；
Some birds will fly away to the south when the weather turns cold.
当天气变冷时，一些鸟类会迁徙到南方。
…experts confirmed that a puma will not attack a human being unless it is cornered.
（新概念英语第三册第一课）专家们明确指出，美洲狮只有在被逼入绝境的情况下才会攻击人类。
There’s no snake known that will habitually attack human beings unless threatened with its life.
在目前已知的蛇类中，还没有哪种蛇会无故攻击人类，除非它们的生命受到威胁。
Sometimes the cat will lie there all afternoon.
有时候那只猫会整个下午都趴在那里。
Water will boil at 100℃. 水在达到100摄氏度时会沸腾。
If the pure water is heated to 100℃， it will boil.
如果纯净的水被加热到100摄氏度，它就会沸腾。
The thicker the material, the less susceptible the garment will be to wet conditions.
材料的厚度越高，服装就越不容易受潮湿环境影响。
She will sit there for hours.她常常会坐在那里几个钟头。
Only in summer will the ice melt.
只有在夏季，冰块才会融化。
Fish will die without water.鱼在没有水的情况下会死亡。
The sun will rise in the east. 太阳会从东方升起。
I will take a walk after dinner every day.
我每天晚饭后都会去散步。
When I get on a bus and I see an advert, I will read it.
每当我乘坐公共汽车时，如果看到广告，我总会读一读。
I will work one day and loaf the next.
我一天工作，然后休息一天。
She will dance for hours.
她能够连续跳上好几个小时。
They’ll happily spend the whole day playing computer games.
他们会愉快地花一整天时间玩电子游戏。
She will wait until the last minute to finish her homework.
她总是拖到最后一刻才完成作业。
She WILL fall in love with the wrong people. 她总是爱上错误的人。
The door won’t open.
这门经常打不开。
She will write for hours at a time. 她常常能连续写上几个小时。
She will never listen to me. 她从不听我的话。
Jealousy will spoil friendship. 嫉妒会破坏友谊。
Accidents will happen. 意外事故是难以避免的。
Sometimes he will wander in the hills all afternoon.
有时他会整个下午在山里闲逛。
Boys will be boys. 男孩终究是男孩。
Art thieves will often hide an important work for years after it has been stolen.
艺术品盗贼在偷走重要艺术品后，常常会将其藏匿好几年。
A second hand car dealer will always look at the bodywork rather than the engine.
旧汽车经销商总是先看车身而不是引擎。
She’ll sit talking to herself for hours. 她能连续坐几个小时自言自语。
When you look at clouds they will often remind you of animals.
当你观察云彩时，它们常常会让你联想到动物。
If something breaks down and you kick it, it will often start working again.
如果某件东西出了故障，你踢它一下，它往往就能重新运转。
2. 特别注意：当在”will”上加上重音时，表明这种行为让说话者感到非常不满，可以翻译为”总是”、”经常”或”常常”；
He will always be late for class. 他总是上课迟到。
He’ll talk for hours, if you let him.
如果你让他说话，他总是要讲上几个小时。
People will talk. 人们总会说闲话。
He will leave his coat on the chair instead of hanging it up.
他总是把外套扔在椅子上，而不是挂起来。
She’ll listen to music, alone in her room, for hours.
她总是独自一人在房间里听音乐，连续听几个小时。
If you will keep interrupting me, how can I answer your question?
如果你继续打断我，我怎么能回答你的问题呢？
She will listen to records， alone in her room for hours. We just won’t interrupt her， for we know this is her usual way to stay in peace.
她常常独自一人在房间里听唱片，连续听几个小时。我们不会打扰她，因为我们知道这是她保持平静的通常方式。
He will comb his hair at the table, even though he knows I don’t like it. 他总是在桌子旁梳头。
I will get angry over nothing.
我总是无缘无故地生气。
He will leave his socks lying all over the place and it drives me crazy. 他总是把袜子丢得到处都是，这简直让我发疯。
He will keep intruding.
他总是打扰我们。
He’ll usually show up about a half an hour late with no excuse or apologies.
他通常会迟到大约半小时，没有任何解释或道歉。
“will”的过去式”would”表示过去的习惯性行为
He will often read deep into the night.他会经常读书到深夜。（现在习惯）
He would often read deep into the night.他会经常读书到深夜。（过去习惯）
The young man will sit there for hours doing nothing. 那个年轻人经常连续几个小时坐在那里无所事事。（现在习惯）
The young man would sit there for hours doing nothing. 那个年轻人经常连续几个小时坐在那里无所事事。（过去习惯）
He would sit by the window, thinking about the past.他过去常常坐在窗边，思考过去的事情。
He would come to see me when he was free.他空闲时会经常来看我。