Life in the Past Decade

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Life in the Past Decade: Present Perfect:

Life in the Past Decade: Present Perfect Kristi Reyes MiraCosta College

Terrorism has increased around the world.:

Terrorism has increased around the world.

Wars have started and continue now.:

Wars have started and continue now.

Airport security has become tighter.:

Airport security has become tighter.

Some governments have changed.:

Some governments have changed.

New epidemics have spread around the world.:

New epidemics have spread around the world.

There have been many natural disasters.:

There have been many natural disasters.

Reality TV shows have become very popular.:

Reality TV shows have become very popular.

Global warming has increased, and the polar caps have melted more.:

Global warming has increased, and the polar caps have melted more.

The economy in the U.S. has gotten worse, and many people have lost their houses and their jobs.:

The economy in the U.S. has gotten worse, and many people have lost their houses and their jobs.

The economy of China has grown.:

The economy of China has grown.

The popularity of video games has increased.:

The popularity of video games has increased.

The U.S. has elected its first black president.:

The U.S. has elected its first black president.

Some things from the past have disappeared or been replaced by new technology.:

Some things from the past have disappeared or been replaced by new technology.

The decade of “i” – Many people have bought ipods, iphones, ipads.:

The decade of “i” – Many people have bought ipods , iphones , ipads .

People (especially teenagers) have begun texting as their main wa:

People (especially teenagers) have begun texting as their main wa

The Web has changed.:

The Web has changed.

Using a cell phone while driving has been made illegal in California (except hands-free).:

Using a cell phone while driving has been made illegal in California (except hands-free).

Present Perfect:

Present Perfect Experiences Verb tense for discussing experiences in the past and completed events and actions up to and including the present time

Three Main Uses of Present Perfect:

Three Main Uses of Present Perfect Use 1 Something that started in the past and still true now Examples:

Three Uses of Present Perfect:

Three Uses of Present Perfect Use 2 Indefinite past action (time unspecified, unstated, or unknown) Examples: ?

Three Uses of Present Perfect:

Three Uses of Present Perfect Use 3 Repeated past action Examples:

Form of Present Perfect:

Form of Present Perfect Subject + have / has + past participle What is a past participle? For regular past tense verbs, the –ed form: liked, walked, worked, talked For irregular past verbs, memorize: been, seen, had, eaten, shown, written

Do you know the past participles?:

Do you know the past participles? Click Here to Find Out. Click! Or here! Or here, too.

Key words for present perfect:

Key words for present perfect Since and for Since + specific point in the past when the action started For + duration, length of time

Practice: since or for?:

Practice: since or for? _______ January _______ 10 years _______ Monday _______ 12 noon _______ I got up _______ 5 minutes _______ a long time ago _______ four days _______ 6:00 _______ Wednesday _______ a month _______ two days ago _______ November 1 _______ 2004 _______ an hour _______ I was young

Key words for present perfect:

Key words for present perfect Already = (adv.) before now I have already finished my homework. Not yet = (adv.) not before now Scientists have not yet discovered a cure for cans.

Key words for present perfect:

Key words for present perfect Never = (adv.) not at any time in the past, including now I have never seen such a beautiful sunset! Ever = (adv.) at any time, including the present ** Used only in questions Have you ever ridden a horse?

Reminder about Adverb Placement:

Reminder about Adverb Placement With two verbs (auxiliary and main verb), place the adverb between them I have never eaten raw fish.

Key words for present perfect:

Key words for present perfect Before = at some time in the past behind the present time I have been to Las Vegas before. Several times, many times, a few times, a couple of times, a lot of times = for indefinite or repeated past actions

Need more practice with since and for?:

Need more practice with since and for? Click Here! Or here!

Online Practice:

Online Practice Simple Practice Forming Questions in Present Perfect Change to Present Perfect More Practice Still More Practice

Any Questions about Present Perfect?:

Any Questions about Present Perfect?

Textbook:

Textbook Pages 60 - 61