Ada cara sederhana untuk mengingat perubahan bentuk “to be” berdasarkan tense.
Cukup dengan membaginya menjadi 4 seperti di bawah ini :
Present (Tense/Progressive) : Is, Am, Are
Contoh :
- I am waiting for my sister to come
- He is waiting for my sister to come
- They are waiting for my sister to come
Past (Tense?Progressive) : Was, Were
Contoh :
- I was waiting for my sister to come when they phoned me
- He was waiting for my sister to come when they phoned him
- They were waiting for my sister to come when I phoned them
Perfect (Present Perfect/Past Perfect) : Has been, Have been, Had been
Contoh kalimat :
- I have been waiting for my sister to come since 3 hours ago
- He has been waiting for my sister to come since 3 hours ago
- They have been waiting for my sister to come since 3 hours ago
- They had been waiting for my sister to come since I went to school yesterday
Semoga bermanfaat.