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When + present simple + present simple
للتعبير عن حقائق علمية وعادات
When we heat ice , it melts
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When + present simple + will + inf
للتعبير عن ترتيبات مستقبلية
When Mr.Mostafa Farouk goes home, he'll call my friends .
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When + past simple + past simple
للتعبير عن حدثان وقعا فى نفس التوقيت دون فاصل زمنى
When Mr.MOSTAFA opened the door, HE saw Dalia.
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When +past simple + past continuous
للتعبير عن حدث قطع حدث اخر ولكن لانستخدم while
When l opened the door, Dalia was studying English.
.......  ....
When \ While + past continuous + past simple
When \ While Dalia was studying English, l opened the door.
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When + past simple حدث تم بعد الحدث الاول + past perfect حدث تم اولا
When l went home  , Dalia had finished her homework.
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When + past perfect حدث تم اولا + past simple حدث تم بعد الحدث الاول
When Dalia had finished her homework  , l went home.
The Quest