This document discusses different types of adverb clauses of condition in English grammar. It provides examples of different conditional connectors used to link an adverb clause to the main clause, including "if", "even if", "whether or not", "unless", and others. It also discusses the punctuation used when the adverb clause begins or ends the sentence. Examples are given to illustrate the meaning and use of each conditional connector. An exercise with fill-in-the-blank questions about adverb clauses of condition is also included.

1. Adverb clauses
Condition

2. Type of adverb clauses : Condition.
• These type of clauses are often called "if clauses"
in English grammar books and follow conditional
sentence patterns.

3. Adverb Clause of Condition คือadverb clause
ที่แสดงเงื่อนไขโดยมีคำสันธำนเชื่อมเข้ำกับประโยคหลัก
ประกอบด้วย
• If
• Even if
• Whether or not
• Unless
• In case (that), in the event (that)
• Only if

4. • supposing (that)
• providing (that), provided (that)
• on the condition (that)
• as long as
• on the understanding that
• but that (= if......not)

5. ลักษณะกำรใช้
• When an adverb clause begins the sentence use a
comma to separate the two clauses.
Example: If he comes, we will have some lunch.
• When the adverb clause finishes the sentence there is no
need for a comma.
Example: He would have invited me if he had known.

6. ตัวอย่ำงประโยค
If'
If' clauses express the conditions necessary for the result. If
clauses are followed by expected results based on the
condition.
Example
• If we win, we'll go to Kelly's to celebrate!
• She would buy a house, if she had enough money.

7. Even if
In contrast to sentences with 'if' sentences with 'even if'
show a result that is unexpected based on the condition in the
'even if' clause.
Example
COMPARE: If she studies hard, she will pass the exam AND
Even if she studies hard, she won't pass the exam.
• Even if she saves a lot, she won't be able to afford that house.

8. Whether or not
'Whether or not' expresses the idea that neither one
condition or another matters; the result will be the same. Notice
the possibility of inversion (Whether they have money or not)
with 'whether or not'.
Example
• They won't be able to come whether or not they have enough
money.
• Whether they have money or not, they won't be able to come.

9. Unless
'Unless' expresses the idea of 'if not' and only used in the
first conditional.
Example
• Unless she hurries up, we won't arrive in time.
• We won't go unless he arrives soon.
• Unless she hurries up, we won't arrive in time. MEANS THE
SAME AS: If she doesn't hurry up, we won't arrive in time.

10. In case (that), in the event (that)
'In case' and 'in the event' usually mean that you don't
expect something to happen, but if it does... Both are used
primarily for future events.
Example
• In the case you need me, I'll be at Tom's.
• I'll be studying upstairs in the event he calls.

11. Supposing (that)
• Supposing (that) it rains, what shall we do.
Provided (that)
• Provided (that) I am free, I shall come.
On condition that
• You may take this book from the library on condition that you
return it next week.

12. As long as
• You may borrow my bicycle as long as you keep if clean.
On the understanding that
• I shall be so happy on the understanding that you all become
friends.
But that
• He would come with me but that he is so busy.

13. Only if
'Only if' means 'only in the case that something happens -
and only if'. This form basically means the same as 'if'. However,
it does stress the condition for the result. Note that when 'only if'
begins the sentence you need to invert the main clause.
Example
• We'll give you your bicycle only if you do well on your exams.
• Only if you do well on your exams will we give you your bicycle.

14. Exercise "Adverbial Clauses Of Condition"
Part 1.
1. you want my advice, I will be in my room.
a. even if b. in case c. only if d. whether
2. You have to apologize to your sister you want to do it
or not.
a. unless b. provide that c. whether d. in case

15. 3. your room is cleaned, you won't be punished.
a. provide that b. in case c. only if d. whether
4. You will never understand this grammar Yvonne helps you.
a. only if b. whether c. unless d. even if
5. he earns a lot, he won't buy this house.
a. in case b. even if c. only if d. whether

16. Part 2.
1. You can use your father's car you drive carefully.
2. they have enough money they are happy.
3. your wife leaves you, what will you do?
4. You are not allowed to go out you have done your
homework.
5. I am with you I am happy doing nothing.