Principles of Flight
Classified in English
Written at on 
English with a size of 2.31 KB.
CONDITIONALS
Type 1: If I go to London, I will see Big Ben (posible,puede ocurrir)
Type 2: If I won 100€, I would buy a house (no ocurre)
Type 3: If I had seen you yesterday, I would have said Hello (pasado)
VERB TENSE:
Present simple:
Always,every...,normally,often,seldom,sometimes,usually,(bus,train,flight..)
I play/He plays/He finishes
Present continuous: At the moment, just, just now, Listen!,Look!, now,right now
I am playing
Present Perfect Simple: Already,ever,just,never,not yet, so far, till now, up to know
I have played
Present Perfect Continuous: All day, for 4 years, since 1993, how long?,the whole week
I have been playing
Past Simple: Yesterday, 2 minutes ago, in1990, the other day, last Friday
I didn´t play
Past Continuous: When, while, as long as
I was playing
Past Perfect Simple: Already,just,never,not yet, once, until that day
I had played
Past Perfect Continuous: For, since, the whole day, all day
I had been playing
Future Simple: In a year, next..., tomorrow
I will play
Future Cotinuous: In one year, next week, tomorrow, by the afternoon
I will be playing
Future perfect:I will have played
Future Perfect Continuous: I will have been playing