CONSERVACION DE MUESTRAS DE LABORATORIO
Tenses demonstrate the time of actions centered around the subject of the sentence. These actions are called verbs and change according to tenses.
En general, las muestras deberán guardarse en un lugar limpio, seco, oscuro, fresco y suficientemente ventilado. Habrá que controlar con regularidad la temperatura de almacenamiento. La temperatura de estas instalaciones no podrá ser inferior a 0 °C ni superar los 30 °C.
There are four Future tenses:
- Future Simple ('with Will' and 'with Going to')
- Future Continuous
- Future Perfect Simple
- Future Perfect Continuous
Ante situaciones que supoenes condiciones de almacenamiento, es el establecimiento de las condiciones pertinentes para la conservacion de la muestra
Future Continuous is used:
- for an action that is likely to happen in the future and continue for an expected length of time
- for an action that will be in progress at some point in the future
- for action verbs (e.g. running)
- for predictions about future events
Adverb used with Future Continuous:
- tomorrow (e.g. tomorrow at 5 o'clock)
CONDICIONES DE ALMACENAMIENTO
Future Simple is used:
- to predict an event in the future
- to invite
- to give orders
- to express willingness
- for actions that have not yet occurred but that will occur at a future date
HUMEDAD
EXPOCICION A LA LUZ
'Going to' Future is used:
- to talk about our future intentions and plans
- for commands
Some adverbs used with 'Going to' Future:
- later
- tonight
- tomorrow
- next week
- next month
- next year
TEMPERATURA
Future Simple with 'will'' is used:
- to predict the future
- for something with absolute certainty
- when we're talking about a decision at the moment of speaking
- promises, requests, refusals, offers
- future facts
Some adverbs used with Future Simple:
- tomorrow
- next week
- next month
- next year
METODOS DE PRESERVACION
There are four Present tenses:
- Present Simple
- Present Continuous
- Present Perfect
- Present Perfect Continuous
se establecen en
Present Perfect Continuous is used:
- to describe an action that started in the past and has continued up to the present
- to describe an action that has just finished
Some adverbs used with Present Perfect Continuous:
- always
- only
- never
- ever
- still
- just
especificaciones de los protocolos
Structure:
Have/ has + Subject + been Verb-ING?
e.g. How long has he been learning German?
para minimizar el deterioro o perdida de la misma por volatilizacion o biodegradacion de sus componentes
Type in your own examples or you can also choose from the examples below.
Form of word "to be":
Have I been being?Have you been being?Has he/she/it been being?Have we been being?Have you been being?Have they been being?
Form of word "to have":
Have I been having?Have you been having?Has he/she/it been having?Have we been having?Have you been having?Have they been having?
las condiciones de almacenamiento
Present Perfect is used for:
- an action that occurred at a time which is indefinite and has its effect on the subject
- an action that occurred many times and has the possibility to occur in the present/future
- an action that began in the past and is still going on in the present
Some adverbs used with Present Perfect:
- just
- already
- yet
- for
- never/ever
- up to now
Segun el tipo de muestra se debe tener en cuenta:
Present Continuous is used to indicate the ongoing time (now).
Some adverbs used with Present Continuous:
- now, right now
- at this moment
- at the moment
- continually
- perpetually
- this year
- this season
- forever
