情态动词本身有一定的意义，是表示语气的词。但不能独立做谓语。它只能和原动词一起构成谓语。让我们告诉你关于高中英语情态动词用法.的事情，让我们看看吧！
高中英语情态动词用法：
情态动词的语法特征
1) 情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。
2) 情态动词 除ought 和have 外，后面只能接不带to 的不定式。
3) 情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。
4) 情态动词没有非谓语形式，即没有不定式，分词，等形式。
比较can 和be able to
1)can could 表示能力;可能 (过去时用could),
只用于现在式和过去式(could)。be able to可以用于各种时态。
They will be able to tell you the news soon. 他很快就能告诉你消息了。
2)只用be able to
a. 位于助动词后。
b. 情态动词后。
c. 表示过去某时刻动作时。
d. 用于句首表示条件。
e. 表示成功地做了某事时，只能用was/were able to， 不能用could。
He was able to flee Europe before the war broke out.
= He managed to flee Europe before the war broke out.
注意：could不表示时态
1)提出委婉的请求，(注意在回答中不可用could)。
— Could I have the television on?
— Yes, you can. / No, you can't.
2)在否定，疑问句中表示推测或怀疑。
He couldn't be a bad man.
他不大可能是坏人。
情态动词might怎么用：
might 表示“ 应该”
You might at least apologize.你至少应道声歉。
You might make a little less noise.你们应小几些声。
You might listen when I am speaking to you.我跟你们讲话，你们应听着嘛。
They might at all events have dropped us a hint.无论如何 他们应给我们露个口风呀。
might 跟完成时态表示“ 简直”“ 简直像”
She did not stir 一 she might have been asleep so far an sound or motion man concerned.她一动都不动— 就声息 动静而言，简直就像睡着似的。
He was tall, but exceedingly lank，with narrow shoulders， long arms and legs, hands that dangled a mile out of his sleeves, feet that might have served for shovels，他身材很高，但特瘦，肩膀很窄，腿臂很长，两手悬垂袖外好长，两脚简直可作铁锹之用。
He woke them both up getting to bed, but when they tried to wake him up afterwards they might as well have tried to wake the dead.他去睡觉的时候把他们两个都弄醒了，但 是随后他们想唤醒他时，就简直像唤死人一样。
He might have been a machine for all the notice they took of him.按他们的不理他一点来说，他简直就像一台机器。
以上四例说明，” might+ 完成态” 常可表“ 夸张的假设”，而有“ 简 直”/“ 简直像” 之意。
情态动词+ have +过去分词的用法：
1) may(might) have + done sth, can (could) have + done sth 表示过去，推测过去时间里可能发生的事情。 Philip may (might) have been hurt seriously in the car accident. Philip can (could) have been hurt seriously in the car accident.
2)must have +done sth，对过去时间里可能发生的事情的推测，语气较强，具有"肯定"，"谅必"的意思。 —Linda has gone to work, but her bicycle is still here. —She must have gone by bus.
3) ought to have done sth, should have done sth本应该做某事，而事实上并没有做。否定句表示"不该做某事而做了"。 You ought to (should) have been more careful in this experiment. He ought not to have thrown the old clothes away.(事实上已扔了。) ought to 在语气上比should 要强。
4) needn't have done sth 本没必要做某事 I dressed very warmly for the trip, but I needn't have done so. The weather was hot.
5) would like to have done sth 本打算做某事 I would like to have read the article, but I was very busy then.
情态动词教学设计：
Step 1 Lead in
T:Whose T-shirt is this?
S: It must be Zhangcai’s.
T:Why?
S:Because only he has such a T-shirt in our class.
T: Should I return it to him?
S: Yes. You should.(It’s our class rule)
T: Can you guess what we are going to review this class?
设计意图：以现实生活中的场景导入新课，激发学生兴趣和积极性，同时降低学生对所学知识的预期难度，给其信心。
Step 2: Watch some videos and finish the tables below.
教师活动：呈现表格，解释学生要记录的知识点(表格在附页P4-6)
学生活动：观看视频，记录知识点。
设计意图： 让学生在语境中感知各类情态动词的实际用法，增强趣味性，降低难度，提升参与度。
Step 3:Explain and learn the knowledge together.
教师活动：验证答案+例句分析。
学生活动：验证答案+用法积累。
设计意图：让学生自己从视频中观察并找出知识点，加深记忆，并体现学生主体性，教师的带领并讲解将知识点脉络化，系统化。
Step 4: Imitate the videos and act them out.
教师活动：组织学生分组，安排各成员任务。
学生活动：模仿视频，分角色表演，实际运用知识。
设计意图：以模拟视频，角色扮演的形式来巩固所学，形象生动，如亲临其境，不仅调动学生的积极性，提高表达能力，还能营造出积极、活泼的课堂气氛。
Step 5: Clarify confusing model verbs
教师活动：解析易混淆知识点，帮助学生正确记忆。
学生活动：理解易混淆知识点，并分类记忆。
设计意图：帮助学生梳理易混知识点，使其正确使用。
Step 6 ：Do related exercise in past exam papers.
教师活动：引导学生抓住真题的关键词，教授做题方法。
学生活动：根据语境正确运用情态动词，通过真题演练消化知识点。
设计意图：以真题形式巩固所学，更有针对性，真正做到直击中考。