The document discusses prefixes and suffixes. Prefixes are syllables or words added before other words that change the original meaning. Suffixes are syllables or words added after other words that change the part of speech or type of the word. The document provides examples of prefixes and suffixes and how they can change the meaning or part of speech of words. It also includes two exercises asking the reader to identify prefixes or suffixes in sentences.

1. PREFIXES AND
SUFFIXES
อุป สรรค และ
ปัจ จัย

2. Prefixes คือ พยางค์หรือคำาที่เติม
หน้าคำาอื่น แล้วทำาให้ความหมาย
ของคำาๆนั้นเปลี่ยนแปลงไปจาก
ความหมายเดิม
Suffixes คือ พยางค์หรือคำาที่เติม
ท้ายคำาอื่น แล้วทำาให้คำาๆนั้น
เปลี่ยนแปลงหน้าที่หรือชนิดของ

3. Exercise 1
1.Do not waste your time on unimportantmatters.
2.It’s hard to find an apartment these
inexpensive
days.
3.You should not lend your car to that
irresponsible
young man.
4. is one of the country’s major
Unemployment
problems.

4. 5. I cannot unlock the door until I
find my key.
6. It will be impossible for me to see you
tonight.
7. I’m not sure what this note says- the boss’s
writing is almost illegible .
8. The Health Department warned us of the
impurity water in the lake.

5. 9. We are sorry if we have caused you any
inconvenience
.
illegal
10. They were caught selling drugs.

6. Exercise 2
mispronunciation
1. We were surprised at the speaker’s
of the word.
2. The mother punished the child for her disobedience .
exchanged
3. The mother the dress for a larger size
because she couldn’t zip the zipper.
included
4. The test a question on the new
vocabulary in the story.

7. 5. The Supreme Court has reversed the decision of
the lower courts.
6. I was having a pleasant dream last night when the
telephone rand and interrupted my sleep.
pronounce
7. Some words are easy to spell but hard to .
8. The weather reporter predicts that it will rain
tomorrow.
perceived
9. By the look on his face, I that something
terrible had happened.

8. 10. I do not like what you are doing, but I do not
want to interfere .
11. The students talked with the teacher about
their dissatisfaction with the new book.
12. He would get better grades on his
compositions if he didn’t misspell so many
words.