UNIT 1

 UNIT 1 1

social media

     Several decades ago, when the idea of internet was barely conceivable, people all over the world had to contended with tiresome methods to exchange information. In the early 1990’s, when the social networking was gaining momentum there was a notable emergence of chat sites which allowed users to communicate in real time with friends and families across the world.

The introduction of video and web cameras ushered in a new dimension to social networking. The internet evolution in social networks from the 1990s onwards introduce the concept of doing business through virtualplatforms.

In 2000, some of the biggest names like Facebook, Twitter and Mezee were invented. Twitter which was launched in 2006 is credited with immense change within online communities. The advent of mobile technology catapulted social networking beyond the imagination of many.

SIMPLE PAST TENSE

    The simple past tense is used to talk about finished actions that happened at a specific time in the past. You state when it happened using a time adverb.

The rules of the simple past tense forms:

   1.Regular verbs ending in a silent e take /-d/ in the simple past and past participle: 

              Example:  close=closed

   2.Regular verbs ending in a vowel + y take /-ed/ in the simple past and past participle:

              Example:play=played

   3.Regular verbs ending in a consonant + y take /-ied/ in the simple past and past participle 

      (the ' y' becomes an ' i' followed by /-ed/)

              Example:   marry=married

   4.All the other regular verbs take /-ed/ in the simple past and past participle. 

              Example:    visit=visited

Special cases of the -ed forms:

  Follow these rules when there is a consonant after a vowel (stop, ban, open, offer...)

  1.If there is a consonant after a stressed vowel at the end of the word, double the consonant

     stop – stopped 

  2.If the vowel is not stressed, we do not double it:

     open - opened (Here the stress is on 'o', not the 'e'.) 

    In British English we double the last 'l' of words like travel, cancel and level even though the last vowel is not stressed. Here are some examples:

     travel - travelled 

     cancel – cancelled

     level - levelled 

     marvel - marvelled