1. Menggunakan to be (was/ were)
was untuk subject : he, she, it, I (tunggal)
were untuk : we, you, they (jamak)
(+) S + to be + complement (pelengkap)
(-) S + to be + not + complement
(?) to be + S + complement
(+) i was happy
(-) i was not (wasn't) happy
(?) were you happy?
2. Menggunakan kata kerja
(+) S + V2
(-) S + did not (didn't) + V1
(?) Did + S + V1
(+) Budi played football yesterday
(-) Budi did not play football yesterday
(?) Did Budi play football yesterday?
apabila menggunakan kata kerja, terdapat "did" kata kerja kembali ke bentuk pertama. Semoga bisa membantu.