chapter 1 conditional if

IF CLAUSE

3 Types of conditional sentences

Type	Condition
I	Condition possible to fulfill
II	Condition in theory possible to fulfill
III	Condition not possible to fulfill (too late)

1.     Form

Type	If-clause	Main Clause
I	Simple  Present	Will-future or (modal + infinitive)
II	Simple Past	Would + infinitive*
III	Past Perfect	Would + have + past participle*

*We can change could or might for would (should, may or must are sometimes possible too)

Example :

·        I would pass the exam.

·        I could pass the exam.

·        I might pass the exam

·        I may pass the exam

·        I should pass the exam

·        I must past the exam

Example (If-clause at the beginning)

Type	If-clause	Main Clause
I	If  I drive my car by myself	I will arrive here on time
II	If  I drove my car by myself	I would arrive here on time
III	If  I had driven my car by myself	I would have arrived here on time

Example (If-clause at the end)

Type	Main Clause	If-Clause
I	I will arrive here on time	If  I drive my car by myself
II	I would arrive here on time	If  I drove my car by myself
III	I would have arrived here on time	If  I had driven my car by myself

Example (affirmative  and negative sentences)

Type	+	-
I	If  I drive my car by myself , I will arrive here on time	If  I drive my car by myself, I will not late here / If I do not drive my car by myself, I will late here
II	If  I drove my car by myself, I would arrive here on time	If I drove my car by myself, I would not late here / If I did not drive my car by myself, I would late here
III	I would have arrived here on time, If  I had driven my car by myself	If I had driven my car by myself, I would not have  late here / If I had not driven my car by myself, I would have late here