مدرس اون لاين كتب:

الماضى التام والافعال الناقصة فى الماضى لا تتغير وغيرها مثل : .
(would/could/might/should/ought to/had better/used to/had+p.p)
Ex-He said" We could see the mountain after we had reached the top of the tower"
He said that they could see the mountain after they had reached the top of the tower.