《Study skills： The prefixes un-, in- and im-》公开课教案下载-德州市优质课

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教学重点

To practice speaking skills by talking about friends.

教学难点

To learn how to add the prefixes to form the opposite meaning .

教学过程

Step1 Revision

We know salad is good for us. You can add anything you like to a salad. Is it healthy to add much sugar? No, it`s not healthy. It`s unhealthy.

Write down “unhealthy”. Explain :By adding a group of letters to the front of an adjectives, we can change its meaning. One of the most common prefixes for adjectives is un-. It means “not”. We add it to some adjectives to give them the opposite meaning.

Step2 Present

We add “un--”

We can also add “in--”, “im---”, to form new words.

Teach and learn. Give models.

Step3 Practise

Brain storm

The students are divided groups of two. One say an adjective, the other spell the opposite form of this word.

Step4 Rules

Help the students gain the rules.

un--; in--,im—(在字母b,m或P开头的单词前), ir--

Give more examples.

certain—uncertain important---unimportant

comfortable---uncomfortable interesting---uninteresting

active—inactive correct---incorrect

patient---impatient possible---impossible

usual---unusual tidy---untidy

regular—irregular perfect--imperfect

Step 5 Activities

Recommend one student from each group, Give them a card with different prefixes, choose another one student to give an order. When he gives the order ,they should put up the right prefixes. If one of them is wrong, he or she will be out.

Step6 Exercise

Do some exercises to use the prefixes correctly.