(?) Were you waiting for the package when your brother came? / Apakah kamu sedang menunggu paket saat kakakmu datang?
3. (+) Sinta and her mother were shopping when the accident happened. / Sinta dan ibunya sedang berbelanja ketika kecelakaan itu terjadi.
(-) Sinta and her mother were not shopping when the accident happened. / Sinta dan ibunya tidak sedang berbelanja ketika kecelakaan itu terjadi.
(?) Were Sinta and her mother shopping when the accident happened? / Apakah Sinta dan ibunya sedang berbelanja ketika kecelakaan itu terjadi?
4. (+) Mark was washing his bike when I passed his house. / Mark sedang mencuci sepedanya ketika aku melewati rumahnya.
(-) Mark wasn’t washing his bike when I passed his house. / Mark tidak sedang mencuci sepedanya ketika aku melewati rumahnya.
(?) Was Mark washing his bike when you passed his house? / Apakah Mark sedang mencuci sepedanya ketika kamu melewati rumahnya?
5. (+) My aunt was writing her first novel in 2019. / Bibiku sedang menulis novel pertamanya di tahun 2019.
(-) My aunt was not writing her first novel in 2019. / Bibiku tidak sedang menulis novel pertamanya di tahun 2019.
(?) Was your aunt writing her first novel in 2019? / Apakah bibimu sedang menulis novel pertamanya di tahun 2019?
Baca Juga: Apa Perbedaan antara Kata Quick dan Fast dalam Bahasa Inggris?