Similar words: ie, in, it, of, bp, c., CH, Co.. Meaning: [ɪf]
conj.1. in case that; granting or supposing that; on condition that: Sing if you want to. Stay indoors if it rains. I'll go if you do. 2. even though: an enthusiastic if small audience. 3. whether: He asked if I knew Spanish. 4. (used to introduce an exclamatory phrase): If only Dad could see me now! 5. when or whenever: If it was raining, we had to play inside. n.6. a supposition; uncertain possibility: The future is full of ifs. 7. a condition, requirement, or stipulation: There are too many ifs in his agreement. 8. ifs, ands, or buts, reservations, restrictions, or excuses: I want that job finished today, and no ifs, ands, or buts..
158) If there were less sympathy in the world, there would be less trouble in the world. Sentencedict.com 

159) If you are successful, you can expect promotion.
160) I won't give her any more if she's ungrateful.
161) You can slide the front seats forward if necessary.
162) How can I explain if you keep butting in?
163) If you mix blue and yellow, you get green.
164) If you fail,don't forget to learn your lesson.
165) The team will definitely lose if he doesn't play.
166) If the dough is sticky, add more flour.
167) Do you mind if I smoke?
168) The allegations, if true, could lead to her resignation.
169) He behaved as if / though nothing had happened.
170) If left untreated the condition may become chronic.
171) If anyone calls, tell them I'm not at home.
172) We'll never get there if he doesn't speed up.
173) He cannot refuse if you ask politely.
174) If the industry doesn't modernize it will not survive.
175) I'll wring your neck if you don't behave!
176) We'll call you if we find it.
177) If you warm ice, it will melt into water.
178) Put your hand up if you know the answer.
179) Speak your mind, even if your voice shakes.
180) If he finds out, he'll scold me.