A conditional consists of two parts: the if –clause ( hypothesis), which begins with the word if, and the main clause, which shows the result of the hypothesis. f.E.If-clause-If you come early, -well stay longer. - main clause
When the if- clause comes before the main clause, we separate them with a comma. When the, main clause comes before the if-clause,then we do not separate them with a comma. If they dont come on time, well leave. Well leave if they dont come on time.
Conditional Type 0 Use Conditional Type 0 express a general truth, a law of nature, something which is always true or something that always happens as a result of something else. If you heat water, it boils. If you put salt on ice, it melts.
Form if-clause main clause If + present simplepresent simple In this type of conditional we can use when instead of if. If/When you boil water, it makes steam.
Conditional Type 1 Use Conditionals Type 1 express a real or very probable situation in the present or future
We can use unless instead of if … not in the if-clause. The verb after unless is always in the affirmative. If you don't like those trousers, I'll buy them. Unless you like those trousers, I'll buy them.
Fom if- clause main clause if + present simple future simple imperative can/must/may/etc + bare infinitive
Relatives (who/ which/ whose/ where/ that) Relative pronouns (who/ which/ whose/ where/ that) introduce relative clauses. We use relative clauses to identify/describe the person or thing in the main clause. The man who is wearing a black coat /relative clause/ is the manager of the bank.
We use who/ that instead of subject pronouns (I, you, he, etc) to refer to people. The man who/ that robbed the bank was caught by the police. We use which/ that to refer to objects or animals. The table which/ that is in the kitchen is very old.
We use whose instead of possessive adjectives (my, your, his, etc) with people, objects and animals to show possession. Thats the woman whose handbag was stolen. We use where (relative adverb) to refer to place. A hospital is a place where people go when they are ill.