1. If-clause If If there are no trees, we will not have any paper. If If John goes to America, he will take lots of photos. If If there are no trees, we will not have any paper. If If John goes to America, he will take lots of photos. If + present tense + future tense

2. Simple sentence: He goes to America. Compound sentence: He goes to America and he takes lots of photos. Complex sentence: He goes to America because he wants to take lots of photos.

3. S V O/C Main Clause conj. S V O/C Subordinate Clause Complex sentence

4. If-clause John will take lots of photos if he goes to America. Main clause Sub. clause(if-clause) If John goes to America, he will take lots of photos. Sub. clause(if-clause) Main claus Complex sentence: Main clause conj. Subordinate clause

5. if We can use if with many different structures: a. if + present simple + present simple If If he asks me, I always help him. B. if + present simple + will+infinitive If If John goes to America, he will take lots of photos. c. if + past simple + would + infinitive If If he asked me, I would help him. d. if +past perfect + would have +p.p. If If he had asked me, I would have helped him.

6. If-clause  We use present conditional (factual conditional sentences with the future ) to talk about what will happen under certain conditions. The if clause states the condition; the main clause states the probable or certain result. If If she wins, she will lower taxes. (statement) If If she wins, will she lower taxes? (yes/no question) Yes, she will./No, she won't. (short answer) What will she do if she wins? (wh-question)

7. If-clause  IF and UNLESS can both be used in conditional sentences, but their meanings are very different. Use unless to state a negative condition. If If Bush wins, the Republicans will gain control. Unless Bush wins, the Democrats will remain in control. (If Bush doesn't win, the Democrats will remain control.)