Chia thì trong các Câu điều kiện

Loại 1: If + present simple, will + base form
Phủ định: If + present simple, will not + base form
Nghi vấn: Will + subject + base form if + present simple?
Loại 2: If + past simple, would + base form
Phủ định: If + past simple, would not + base form
Nghi vấn: Would + subject + base form if + past simple?
Loại 3: If + past perfect, would have + past participle
Phủ định: If + past perfect, would not have + past participle
Nghi vấn: Would have + subject + past participle if + past perfect?