13. Express the following sentences in the Plural:(выразите во множественном числе) 1. That subject was very important.
2. This doctor carries on his experiment on a rabbit.
3. That is my fellow student's text-book.
4. My fellow student pays great attention to this subject.
5. That student lives at our Institute hostel.
6. That doctor treated a patient successfully.
БЫСТР
Present Simple :
Katie lives in Brazil ( Катя живёт в Бразилии) ; She works at school ( Она работает в школе)
Past Simple
We played basketball ( мы играли в баскетбол) ; I feel he didn't believe ( я чувствую, что он не поверил мне)
Present Continuous:
I am watching TV (Я смотрю телевизор) ; The sun shines ( светит солнце)
Past Continuous:
Our office was closed this morning ( наш офис был закрыт сегодня утром) ; He was always talking to someone on the phone( он постоянно говорил с кем-то по телефону)
Present Perfect:
Have you ever been to Russia? (вы когда-либо были в России?) ; She didn't cook before ( она раньше не готовила)
Past Perfect :
I had already finished my work ( я уже закончил свою работу) ;
Had you come by the time the party started?( Вы пришли к началу вечеринки?)