Выпишите из каждого глагол – сказуемое и определите его видовременную форму. напишите форму инфинитива глагола. 1. the mailman has just dropped some mail in our box. 2. reading is one of the main ways of transmitting a culture from one generation to another. 3. the secretary offered a chair to the visitor. 4. the rain was beating on the windows. 5. the customer had been trying to draw the attention of a waiter for ten minutes. 6. the guests will be singing to the accompaniment of the piano at the party.

Has dropped(Present Perfect) - drop
is(Present Simple) - to be
offered(Past Simple) - offer
was beaing(Past Continuous) - beat
had been trying (Past Perfect Continuous)- try
will be singing(Future Simple) - sing

1. has dropped - бросил (уже) - Past Perfect, [инфинитив -  to drop]
2. is -  есть, является -          - Present Simple, [инф. -  to be]        
3. offered -  предлагал -         - Past Simple,  [инф. -   to offer]
4. was beating -  бил (в определённое время) -  Past Continuous, [инф. -  to beat]
5. had been trying -  пытался (на протяжении времени, периода) - Past Perfect Continuous,  [инф. -  to try]
6. will be singing -  будет петь (в определённое время, то есть на вечеринке) -  Future Continuous,  [инф. -  to sing]