Alexander Graham Bell was born on March 3, 1847 in Edinburgh (Scotland).One day he came to the idea of creating a device by means of which "would be possible to transmit different sounds, if I can cause fluctuations of the current corresponding to the fluctuations in the density of the air, which produces this sound." In parallel, Bell worked on the problem of simultaneous transmission of several telegraph messages on one wire, and pure chance to experiment with them to set up a "musical telegraph" helped him discover a phenomenon that led to the invention of the telephone.February 14, 1876 Bell and simultaneously with the inventor, I.Grey filed a patent application on the invention of the telephone. The patent was issued to Bell March 7, 1876, but only in 1893, after many trials the US Supreme Court allowed the priority dispute in his favor.Among other inventions Bell - improvement of Edison's phonograph, the use of flexible aileron with rigid bearing surface for the flight control of the aircraft. Bell has published more than 100 articles and received 30 patents.He was awarded the A. Volta, established by Napoleon, and in 1877 was awarded the Legion of Honor. Bell died near Baddeck August 2, 1922.
If you (to be) busy, i (to have) you alone. 1 TYPE. IF YOU'RE BUSY, I WILL LEAVE YOU ALONE 2 TYPE. IF YOU WERE BUSY, I WOULD LEFT YOU ALONE 3 TYPE. IF YOU HAD BEEN BUSY, I WOULD HAVE LEFT YOU ALONE
2. If i (to have) in Moscow, i (to visit) the Tretyakov Gallery every year. 1 TYPE. IF I AM IN MOSCOW, I WILL VISIT THE TRETYAKOV GALLERY EVERY YEAR 2 TYPE. IF I WERE IN MOSCOW, I WOULD VISIT THE TRETYAKOV GALLERY EVERY YEAR 3 TYPE. IF I HAD BEEN IN MOSCOW, I WOULD HAVE VISITED THE TRETYAKOV GALLERY EVERY YEAR
3. If i (to get) a ticket, i (to go) to the Philharmonic. 1 TYPE. IF I GET A TICKET, I WILL GO TO THE PHILARMONIC 2 TYPE. IF I GOT A TICKET, I WOULD GO TO THE PHILARMONIC 3 TYPE. IF I HAD GOT A TICKET, I WOULD HAVE GONE TO THE PHILARMONIC
4. If i (to live) near a wood, i (to gather) a lot of mushrooms. 1 TYPE. IF I LIVE NEAR A WOOD, I WILL GATHER A LOT OF MUSHROOMS 2 TYPE. IF I LIVED NEAR A WOOD, I WOULD GATHER A LOT OF MUSHROOMS 3 TYPE. IF I HAD LIVED NEAR A WOOD, I WOULD HAVE GATHERED A LOT OF MUSHROOMS
5. If my father (to return) early, we (to watch) TV together. 1 TYPE. IF MY FATHER RETURNS EARLY, WE WILL WATCH TV TOGETHER. 2 TYPE. IF MY FATHER RETURNED EARLY, WE WOULD WATCH TV TOGETHER 3 TYPE. IF MY FATHER HAD RETURNED EARLY, WE WOULD HAVE WATCHED TV TOGETHER
6. If she (to know) English, she (to try) to enter the university. 1 TYPE. IF SHE KNOWS ENGLISH, SHE WILL TRY TO ENTER THE UNIVERSITY 2 TYPE. IF SHE KNEW ENGLISH, SHE WOULD TRY TO ENTER THE UNIVERSITY 3 TYPE. IF SHE HAD KNOWN ENGLISH, SHE WOULD HAVE TRIED TO ENTER THE UNIVERSITY
7. If my friend (to come) to see me, i (to be) very glad. 1 TYPE. IF MY FRIEND COMES TO SEE ME, I WILL BE VERY GLAD 2 TYPE. IF MY FRIEND CAME TO SEE ME, I WOULD BE VERY GLAD 3 TYPE. IF MY FRIEND HAD COME TO SEE ME, I WOULD HAVE BEEN VERY GLAD
8. If mother (to buy) a cake, we (to have) a very nice teaparty. 1 TYPE. IF MOTHER BUYS A CAKE, WE WILL HAVE A VERY NICE TEAPARTY 2 TYPE. IF MOTHER BOUGHT A CAKE, WE WOULD HAVE A VERY NICE TEAPARTY 3 TYPE. IF MOTHER HAD BOUGHT A CAKE, WE WOULD HAVE HAD A VERY NICE TEAPARTY
9. If we (to receive) a telegram from him, we (not to worry). 1 TYPE. IF WE RECEIVE A TELEGRAM FROM HIM, WE WILL NOT WORRY 2 TYPE. IF WE RECEIVED A TELEGRAM FROM HIM, WE WOULDN'T WORRY 3 TYPE. IF WE HAD RECEIVED A TELEGRAM FROM HIM, WE WOULD HAVEN'T WORRIED
10. If you (not to work) systematically, you (to fail) at the examination. 1 TYPE. IF YOU DONT WORK SYSTEMATICALLY, YOU WILL FAIL THE EXAMINATION 2 TYPE. IF YOU DIDNT WORK SYSTEMATICALLY, YOU WOULD FAIL THE EXAMINATION 3 TYPE. IF YOU HADN'T WORKED SYSTEMATICALLY, YOU WOULD HAVE FAILED EXAMINATION ЭТЖ КАК Я ДОЛГО ПЕЧАТАЛ
1 TYPE. IF YOU'RE BUSY, I WILL LEAVE YOU ALONE
2 TYPE. IF YOU WERE BUSY, I WOULD LEFT YOU ALONE
3 TYPE. IF YOU HAD BEEN BUSY, I WOULD HAVE LEFT YOU ALONE
2. If i (to have) in Moscow, i (to visit) the Tretyakov Gallery every year.
1 TYPE. IF I AM IN MOSCOW, I WILL VISIT THE TRETYAKOV GALLERY EVERY YEAR
2 TYPE. IF I WERE IN MOSCOW, I WOULD VISIT THE TRETYAKOV GALLERY EVERY YEAR
3 TYPE. IF I HAD BEEN IN MOSCOW, I WOULD HAVE VISITED THE TRETYAKOV GALLERY EVERY YEAR
3. If i (to get) a ticket, i (to go) to the Philharmonic.
1 TYPE. IF I GET A TICKET, I WILL GO TO THE PHILARMONIC
2 TYPE. IF I GOT A TICKET, I WOULD GO TO THE PHILARMONIC
3 TYPE. IF I HAD GOT A TICKET, I WOULD HAVE GONE TO THE PHILARMONIC
4. If i (to live) near a wood, i (to gather) a lot of mushrooms.
1 TYPE. IF I LIVE NEAR A WOOD, I WILL GATHER A LOT OF MUSHROOMS
2 TYPE. IF I LIVED NEAR A WOOD, I WOULD GATHER A LOT OF MUSHROOMS
3 TYPE. IF I HAD LIVED NEAR A WOOD, I WOULD HAVE GATHERED A LOT OF MUSHROOMS
5. If my father (to return) early, we (to watch) TV together.
1 TYPE. IF MY FATHER RETURNS EARLY, WE WILL WATCH TV TOGETHER.
2 TYPE. IF MY FATHER RETURNED EARLY, WE WOULD WATCH TV TOGETHER
3 TYPE. IF MY FATHER HAD RETURNED EARLY, WE WOULD HAVE WATCHED TV TOGETHER
6. If she (to know) English, she (to try) to enter the university.
1 TYPE. IF SHE KNOWS ENGLISH, SHE WILL TRY TO ENTER THE UNIVERSITY
2 TYPE. IF SHE KNEW ENGLISH, SHE WOULD TRY TO ENTER THE UNIVERSITY
3 TYPE. IF SHE HAD KNOWN ENGLISH, SHE WOULD HAVE TRIED TO ENTER THE UNIVERSITY
7. If my friend (to come) to see me, i (to be) very glad.
1 TYPE. IF MY FRIEND COMES TO SEE ME, I WILL BE VERY GLAD
2 TYPE. IF MY FRIEND CAME TO SEE ME, I WOULD BE VERY GLAD
3 TYPE. IF MY FRIEND HAD COME TO SEE ME, I WOULD HAVE BEEN VERY GLAD
8. If mother (to buy) a cake, we (to have) a very nice teaparty.
1 TYPE. IF MOTHER BUYS A CAKE, WE WILL HAVE A VERY NICE TEAPARTY
2 TYPE. IF MOTHER BOUGHT A CAKE, WE WOULD HAVE A VERY NICE TEAPARTY
3 TYPE. IF MOTHER HAD BOUGHT A CAKE, WE WOULD HAVE HAD A VERY NICE TEAPARTY
9. If we (to receive) a telegram from him, we (not to worry).
1 TYPE. IF WE RECEIVE A TELEGRAM FROM HIM, WE WILL NOT WORRY
2 TYPE. IF WE RECEIVED A TELEGRAM FROM HIM, WE WOULDN'T WORRY
3 TYPE. IF WE HAD RECEIVED A TELEGRAM FROM HIM, WE WOULD HAVEN'T WORRIED
10. If you (not to work) systematically, you (to fail) at the examination.
1 TYPE. IF YOU DONT WORK SYSTEMATICALLY, YOU WILL FAIL THE EXAMINATION
2 TYPE. IF YOU DIDNT WORK SYSTEMATICALLY, YOU WOULD FAIL THE EXAMINATION
3 TYPE. IF YOU HADN'T WORKED SYSTEMATICALLY, YOU WOULD HAVE FAILED EXAMINATION ЭТЖ КАК Я ДОЛГО ПЕЧАТАЛ