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This module focuses on six tenses within two verb tense areas: The simple and the perfect tenses . The simple tenses consist of the present , the past , and the future . The perfect tenses are the present perfect , the past perfect , and the future perfect .

Verbs are conjugated to show the time an action or idea is expressed. The time conveyed by a verb is its tense . A verb tense shows the particular time in which an action took place and its relationship to when the action was spoken or written.

Each of the six tenses covered in this module has its own usage and form of conjugation.

The six tenses:

The simple tense

Simple tenses indicate simple time relationships.

The present tense expresses an action in the present or one that occurs always, repeatedly, or habitually.

Example: The horses eat the hay every day.

The past tense conveys a definite completed action in the past.

Example: The horses ate the hay last week.

The future tense communicates an action that has not yet occurred but will take place in the future. This tense uses “ will ” or “ going to ” with the past participle.

Example: The horses will eat / are going to eat the hay tomorrow.

The past participle

The past participle of a verb usually indicates a completed action and generally has the same form as the past tense. Regular forms of the past participle usually end in – d , - ed , - n , - en , or - t.

The following hand out lists the present, past, and past participle for common irregular verbs: Irregular Verb tense list

The perfect tense

A verb in the perfect tense expresses an action that was or will be completed at the time of another action or a specific occasion. The perfect tense of an action uses have or has with the past participle.

The present perfect tense expresses an action that is completed at the present time or is continuing into the present. This tense uses have or has + the past participle of a verb.

Example: The horses have eaten all the hay this morning.

The horse has eaten all the hay this morning.

The past perfect tense conveys an action that was completed before a time in the past. This tense uses had + the past participle of a verb.

Example: The horses had eaten all the hay before it rained.

The horse had eaten all the hay before it rained.

The future perfect tense expresses an action that has not yet occurred but will take place in the future. This tense uses will or going to + have + the past participle of a verb.

Example: The horses will have eaten / are going to have eaten the hay before it rains.

The horse will have eaten / is going to have eaten the hay before it rains.

Objectives

Students will learn that verb conjugation depends on the time in which an action or idea is expressed.

The students will learn that the two basic forms of verb tenses for the present, past, or future times are the simple tense and the perfect tense. They will also learn that in the present tense, a singular subject takes a singular verb and that singular verbs end with – s . Furthermore, a plural subject takes a plural verb, which does not end with – s .

Students should also learn that the perfect tense always ends with the past participle of a verb.

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Civis project - uprm. OpenStax CNX. Nov 20, 2013 Download for free at http://cnx.org/content/col11359/1.4
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