NB: In the Conditional sentences of Type II, the verb to be used in the subordinate clause can acquire the form of were for he, she, it and I.
13. Put the verbs in brackets in appropriate form so that Conditional
sentences of Type II are correct. Make your choice between positive and
negative forms.
1. The wire (rotate) around the magnet if it (be supplied) with
current from a chemical battery.
2. If you (move) a magnet through a loop of wire, an electric current
(flow) in that wire.
3. The current also (flow) if the loop (be moved) over a
stationary magnet.
4. If you (rub) the amber for long enough, you (get) an
electric spark to jump.
5. If you (study) the subject closer, you (see) many ways of
carrying an electric current.
6. A proton and a neutron (move) very slowly if they (be) in a
helium nucleus.
7. Vacuum furnaces make use of induction heating for the production of
special steels and other alloys that (oxidize) if one (heat)
them in the presence of air.
14. Put the verbs in brackets in appropriate form so that Conditional sentences
of Type III are correct. Make your choice between positive and negative forms.
1. If they (have) difficulties with the engine, the passengers
(sit) in the plane when the bomb went off.
2. Audible noise (be produced) by cookware exposed to high
magnetic fields if the cookware (have) loose parts.
3. If a positive charge (be brought) near the metal object, the
negative charges in the metal (be attracted) toward it.
4. If the external charge (be) negative, the polarity of the charged
regions (be reversed).
5. If an electrical contact (be made) between the electroscope
terminal and ground, it (cause) charge to flow from ground to the
terminal.
6. If a positive charge (be brought) near a nonconductive object, the
electrons in each molecule (be attracted) toward it.
7. If a liquid or gas (contain) ions, then the ions (be made) to
flow as an electric current.
Before we came home we had bought a lot of food.
До того, как мы пришли домой, мы купили много еды.
Before Captain Cook went to the Antarctic he had been to Australia.
Прежде чем капитан Кук отправился в Антарктику, он побывал в Австралии.
Ushakov had taken part in the Russo-Turkish war before he became an admiral.
Ушаков принял участие в русско-турецкой войне до того, как он стал адмиралом.
Before my parents visited London they had seen a film about it.
Прежде чем посетить Лондон мои родители посмотрели фильм о нем.
She had not acted in Hollywood before she started to work there in 1839.
Она не снималась в кино в Голливуде до того, как начала работать там в 1839 году.
Объяснение:
I use the internet for various reasons. Nowadays, the Internet is needed for video conferencing. When I travel I need the Internet in order to translate sentences and words and also to navigate around the city. And after a hard day, I really want to watch some movie with a cup of cocoa. I also love talking to friends through a video call because you can play different games and perform actions through video. I think that the Internet is a very useful thing that has fundamentally changed the lives of people.