Presente perfect and real conditional - grammar

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Unit 1 – Present Perfect with Yet, already , just (Changes)

Use the present perfect to talk about things that happened in the past and have an effect on the present

Examples:
My neighbor has just painted his front door. (It looks good now).
Kim has already written her report. (The report is finished now.)

• Use not yet when somethinghas not happened but you expect it to happen or be completed in the future.
George hasn’t finished that book yet. (But he’ll finish it in a few days.)

• Use just when the action happened very recently.
I’ve just washed the car. (I finished washing it a few minutes ago.)

• Use already when the action is completed sooner than expected.
I’vealready cleaned up my desk. (My desk is neat and clean now.) neat = arrumado

• Use yet to ask whether something has happened that you are expecting will happen. (Use Yet para perguntar sobre algo que tem acontecido e você está esperando acontecer) Yet is used in questions and negative sentences.
Have you done your homework yet? (Is your homework finished?) I haven’tfinished yet.

• Just goes between have and the past participle.
He has just cleaned the house.

• Yet usually goes at the end of a clause.
I haven’t walked the dog yet.

• Already goes either between have and the past participle or at the end of the clause.
She has already bought some plants.
She has bought some plantsalready.

Note: You may also use the past tense with yet, already and just.
Did you eat yet? I already ate. I just had breakfast.

Unit 2 – Real Conditional (Australia)

Use the real conditional to talk about future possibilities.
Will I need rain gear if I go in June?

• Use the real conditional to make suggestions and to give advice or warnings.If you plan several flights, it will be cheaper to buy a pass.
If you book your flight well in advance, you may get a better price.
If you use sunscreen, you won’t get sunburned.

• The if clause states the condition (What needs to happen).
If I have the time, I’ll help you with your homework. (I will help you under the condition that Ihave time.)

• Use the simple present in the if clause and the future with will or be going to, a modal, or the imperative in the result clause.

|If clause (Condition): |Result clause (Condition): |
|Simple Present|Future or Imperative |
| | |
| |you’ll see beautiful landscapes. |
|If yougo to Australia, |are you going to bring me a souvenir? |
| |I can lend you a travel guide. |
| |take me with you.|

• Unless means if not.
Don’t go to Australia unless you like hot weather. (Don’t go to Australia if you don’t like hot weather.)

Note: The if clause can go before or after the result clause. Use comma to separate the two clauses only when the if clause begins the sentence.
If you use...