1 I was on the bus just now. It was very noisy on the bus, so I didn't hear the cellphone ring.
2 I thought it was going to rain, but it turned out that there was no rain.
3 The weather forecast said that there would be a heavy rain, but we had a small rain instead.
4 When the meeting is on, turn your cellphone to the silence mode s or the vibration mode.
5 I phoned you three times / I phoned you so many times, but why didn't you ring back ?