Первый вид условного наклонения

Первый вид условного наклонения If + Present Simple, Will + Present simple. Это реальные действия.

Doctor Mobstine will examen her if she shows up.

Второй вид условного наклонения

Второй вид сослагательного наклонения описывают не реальные действия относитсящиеся к настоящему или будущему: I + rode (Past Simple) , Could, Might, Would + ride (Present Simple).

If she showed up, Dr. Mobstine would/Could/Might exam her.
If Victor went away on business trip His wife would know about it today.
Namenda Might/would/Could call Dr. Mobstine if  she turned on her mobiles phones in  two days’ time.

Третий вид условного наклонения

Третий вид сослагательного наклонения предназначен для описания нереальных событий прошедшего времени: If + had gathered/written, Might/would/Could/ + have gone/picked.

if she had showed up, Dr. Mobstine would/Could/Might have examined her yesterday.
If Victor had gone away on business trip, His wife would have known about it yesterday.
Nadezda Might/would/Could have called Dr. Mobstine if she had turned on her mobiles phones in two days’ time.

Смешанное наклонение

If + Past Perfect, would/Could/Might + Present Simple.

If she had stayed at home I would brought you my present.
If they were good students, they would have studied for the test. (They are not good students. They did not study for the test yesterday.)

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