Monday, October 18, 2010

In English, there are three basic tenses: present, past, and future. Each has a perfect form, indicating completed action; each has a progressive form, indicating ongoing action; and each has a perfect progressive form, indicating ongoing action that will be completed at some definite time. Here is a list of examples of these tenses and their definitions:

Simple Forms
Present Tense
Present tense expresses an unchanging, repeated, or reoccurring action or situation that exists only now. It can also represent a widespread truth.
Example
Meaning
The mountains are tall and white.
Unchanging action
Every year, the school council elects new members.
Recurring action
Pb is the chemical symbol for lead.
Widespread truth
Past Tense
Past tense expresses an action or situation that was started and finished in the past. Most past tense verbs end in -ed. The irregular verbs have special past tense forms which must be memorized.
Example
Form
W.W.II ended in 1945.
Regular -ed past
Ernest Hemmingway wrote "The Old Man and the Sea."
Irregular form
Future Tense
Future tense expresses an action or situation that will occur in the future. This tense is formed by using will/shall with the simple form of the verb.
The speaker of the House will finish her term in May of 1998.
The future tense can also be expressed by using am, is, or are with going to.
The surgeon is going to perform the first bypass in Minnesota.
We can also use the present tense form with an adverb or adverbial phrase to show future time.
The president speaks tomorrow. (Tomorrow is a future time adverb.)


Progressive Forms
Present Progressive Tense
Present progressive tense describes an ongoing action that is happening at the same time the statement is written. This tense is formed by using am/is/are with the verb form ending in -ing.
The sociologist is examining the effects that racial discrimination has on society.

Past Progressive Tense
Past progressive tense describes a past action which was happening when another action occurred. This tense is formed by using was/were with the verb form ending in -ing.
The explorer was explaining the lastest discovery in Egypt when protests began on the streets.

Future Progressive Tense
Future progressive tense describes an ongoing or continuous action that will take place in the future. This tense is formed by using will be or shall be with the verb form ending in -ing.
Dr. Jones will be presenting ongoing research on sexist language next week.


Perfect Forms
Present Perfect Tense
Present perfect tense describes an action that happened at an indefinite time in the past or that began in the past and continues in the present.This tense is formed by using has/have with the past participle of the verb. Most past participles end in -ed. Irregular verbs have special past participles that must be memorized.
Example
Meaning
The researchers have traveled to many countries in order to collect more significant data.
At an indefinite time
Women have voted in presidential elections since 1921.
Continues in the present

Past Perfect Tense
Past perfect tense describes an action that took place in the past before another past action. This tense is formed by using had with the past participle of the verb.
By the time the troops arrived, the war had ended.

Future Perfect Tense
Future perfect tense describes an action that will occur in the future before some other action. This tense is formed by using will have with the past participle of the verb.
By the time the troops arrive, the combat group will have spent several weeks waiting.


Perfect Progressive Forms
Present Perfect Progressive
Present perfect progressive tense describes an action that began in the past, continues in the present, and may continue into the future. This tense is formed by using has/have been and the present participle of the verb (the verb form ending in -ing).
The CEO has been considering a transfer to the state of Texas where profits would be larger.

Past Perfect Progressive
Past perfect progressive tense describes a past, ongoing action that was completed before some other past action. This tense is formed by using had been and the present perfect of the verb (the verb form ending in -ing).
Before the budget cuts, the students had been participating in many extracurricular activities.

Future Perfect Progressive
Future perfect progressive tense describes a future, ongoing action that will occur before some specified future time. This tense is formed by using will have been and the present participle of the verb (the verb form ending in -ing).
By the year 2020, linguists will have been studying and defining the Indo-European language family for more than 200 years.

Sunday, October 17, 2010


Simple past (English)
The simple past, sometimes called the preterite, is the past tense of Modern English. It is used to describe events in the past. It may combine with either or both of two aspects, theperfect and the progressive. When the simple past is employed in the subjunctive mood, it is called the subjunctive imperfect.
Pronunciation
If the base verb ends in /d/ or /t/, the regular past-tense ending -ed is pronounced /ɨd/; after all other unvoiced consonants it becomes /t/, and in all remaining cases (other voiced consonants and vowels) it is pronounced /d/.
Form: regular verbs
The simple past is formed by adding -ed to the end of an infinitive and then removing the to, for example:
§  to play becomes played
Verbs ending in -e add -d instead, for example:
§  to place becomes placed
Verbs ending in a consonant, containing one vowel and having one syllable add a second of the last consonant and then -ed, whilst also removing the to to form the simple past, for example:
§  to stop becomes stopped
Verbs of which the final letter is -y replace the y with an i. For example:
§  to try becomes tried
Form: irregular verbs
All the irregular verbs have different forms: to go - went, to buy - bought, to cut - cut etc.
Pronoun
Example verb
I
stole (of to steal)
I
saw (of to see)
Notes
One does not use the auxiliary verb to do with the verb to be or modal verbs.
§  Were you a student?
The auxiliary to do is not used in questions beginning with the nominative pronouns who or which.
§  Who met you? (who is the nominative pronoun)
§  Which train arrived on time? (which train is the nominative pronoun)
But: Whom did you meet? Which train did you miss? (whom and which train are the accusative pronouns) A negative question normally expresses a surprise.
§  Didn't you know ?
Use
One uses the simple past for actions or situations that one has completed in the past at a definite time.The time can be given in the sentence:
I came home at 6 o'clock.
The time is asked about:
When did they get married?
One uses the past simple for repeated actions in the past.
We walked to school every day.
The past simple is used in stories to express actions that follow each other.
Charles entered the hall, looked around, took off his coat and put it on a chair.