Conditional sentences type 0,1

 Conditional sentences type 0 is used for things that are genrally or always true

Form

If/when  subject+present simple,subject +present simple

Example

If the temperature of water rises to 100C.it turns into steam.

Conditional Sentences Type I refer to the future. An action in the future will only happen if a certain condition is fulfilled by that time. We don't know for sure whether the condition actually will be fulfilled or not, but the conditions seems rather realistic – so we think it is  likely to happen.

 

Form

if + Simple Present, will-Future

Example: If I find her address, I will send her an invitation.

The main clause can also be at the beginning of the sentence. In this case, don't use a comma.

Example: I will send her an invitation if I find her address.  

Note: Main clause and / or if clause might be negative.

Example: If I don’t see him this afternoon, I will phone him in the evening

                Worksheet on tenses

Correct verbs in brackets

1-The train( leave) every morning at 8 AM.

2-Windows ( make) of glass

3-He ( not need) help now

4-I ( not read) any books right now.

5-................ you ............ dinner last night?have

6-People( paiy) much more to make cell phone calls in the past.

7-When the phone rang, she ( write) a letter

8-Yesterday at this time, I ( sit) at my desk at work.

9-While I ( study), she called.

10-Nobody..... ever (climb) that mountain.

11-My English ( improve )since I moved to Australia.

12-By the time Alex finished his studies, he (be) in London for over eight years.

13-George ( repair) many cars before he received his mechanic's license

14-While he was playing , he (fall)down and broke his leg.

Awork sheet on the passive

Change the following into passive voice

1-Someone gave John a dollar yesterday.

…………………………………………………………………………………………….

2-Researchers believe that oil alternatives will help to reduce pollution.

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3-We should build bridges between Palestine and the world.

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4-Scientists have carried out a great deal of technical studies and experiments.

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5-Does negative stress cause failure?

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6-They are developing new methods of teaching.

              …………………………………………………………………………………………….  

7--Scientists are looking for alternatives for oil .

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8-The police will catch the thief .

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9-They were painting the house when I arrived

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10-Customers use debit cards to withdraw cash from the cash machine .

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11-She has deposited one hundred in her account .

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12.They are building a new house.

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13.The government must find a solution for the problem.

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14.We have produced over 20 modals since last year.

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15The are going to build a new factory in our country.

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16. The Palestinian National Authority has built many schools since 1995.

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