Conditional Sentences
1. Pattern If - Clause , Main Clause
OR
Main Clause if - clause
2. 5 Type of Conditional Sentence
1. Fact:If we put sugar into the water , it dissolve
2. Future Possible:If it rain , I won't go out.
3. Present Unreal:If I were you , I would kill him.
4. Past Unreal:If he had driven carefully , he wouldn't have had an accident
5. Mixed 4 + 3:If I had eaten my breakfast this morning , I wouldn't behungry now.
3. How to omit "If"
: If it rains ,  Should it rain , : If I were you  Were I you , : If I taught math  Were I to teach math , : If he had driven  Had he driven , 4. Unless = If - not: If it doesn't rain ,  Unless it rains , : If I didn't work here,  Unless I worked here , : If I hadn't met her,  Unless I had met her , 5. If= Providing (that) , provided (that)
= supposing (that) , suppose (that)
= on condition that
= if only
= only if
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