Тема: Вивчення префіксів. Поняття префікса. Значення префіксів. Найуживаніші префікси в англійській мові.
T.: At today’s lesson we are going to learn about prefixes. Systematizing material we’re doing a lot of different tasks.
Firstly, let’s learn what a prefix is.
A prefix is a set of letters that is added to the beginning of a word to change its meaning. Each prefix has a general meaning.
T.: So you will be able to understand what a word with a prefix means more easily.
Let's look at an example.
friendly unfriendly
T.: The first man looks very friendly! I think it would be nice to spend time with him.
The second man looks unfriendly. I don't think it would be much fun to spend time with him!
We can see in the second sentence that we added the prefix "un-" to the word "friendly." This prefix "un-" means "not" or "the opposite of."
Here are more examples with the prefix "un-":
happy ----> unhappy
finished ----> unfinished
believable ----> unbelievable
acceptable ----> unacceptable
These words are all adjectives. We can also use the prefix "un-" with verbs.
Look at these examples:
do ----> undo plug in ----> unplug
T.: When you see a word that begins with the prefix "un-", you can know its meaning by looking at the word's root (the part that is not the prefix or the suffix). It might be a word you already know! But, be careful! Be sure you've seen the whole prefix before you decide the word's meaning.
Look at the word below:
underdeveloped
T.: Let's try to find the prefix. Is it "un-" as in underdeveloped? No, that doesn't sound right!
We know the word "develop," which means "to grow bigger or become more advanced." This is the root of our word!
T.: So, the prefix must be under, which means "below," "lower," or "not enough." The word underdeveloped means "not developed enough."
T.: Let’s look at common prefixes, their meaning, and an example word.
Prefix Meaning Example word
dis- not, opposite of disagree
in-, im- not incorrect, impossible
mis- incorrectly misunderstand
re- again redo (do again)
un- not uninteresting
under- below, lower, not enough underwater
2.Writing
T.: Now, let’s do some written tasks. Look at your cards.
The first your task is to complete the sentences by writing the correct prefix in the blank space. You can use a dictionary to help you. (card #1)
The second task is to choose the right answer. (card #2)
The third task for you is to use prefixes to find the opposite of the verbs. (card #3)
Card #1
Complete the sentences by writing the correct prefix in the blank space. You can use a dictionary to help you.
dis- -in mis- re- un- under-
1. I just can't believe it! The story is _____believable!
2. No, that answer is _____correct. It is wrong.
3. Let's look at this information again. We should _____view it before the test.
4. I saw Allison just a moment ago, but now I can't find her! It seems that she _____appeared!
5. Oh, I'm sorry, I didn't hear you correctly. I _____understood you.
6. The subway does not go over the land like a normal train. It moves _____ground.
Card #2
Choose the right answer.
1. His behavior is .
inacceptable unacceptable
2. nutrition is a major problem in many countries of the world.
Inadequate Unadequate
3. She is impatient, inattentive, and .
impredictable inpredictable unpredictable
4. The opposites of "common, fair, sociable" are formed with the prefix .
in un
5. The opposites of "convenient, famous, sufficient" are formed with the prefix .
in un
6. Her remark about his family was impolite and .
disrespectful irrespectful misrespectful
7. I'm very sorry. I probably your book, and now I can't find it.
displaced misplaced unplaced
8. The start button is activated and by pushing this lever up and down.
deactivated deactivated disactivated desactivated
9. Have you read the to this book?
Foreword forword forward
10. I forgot to tell you that we had some expenses during our trip.
unforeseen unforseen
Card #3
Use prefixes to find the opposite of these verbs:
1- wrap
2- use
3- agree
4- engage
5 - behave
6- understand
7- fold
8- spell
9- connect
10- close
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