السبت، 9 فبراير 2013

Grammar unit 3 - Energy

Grammar unit 3  Energy
Part two

Present Simple and present  continuous - Active and Passive

Present Simple 
يستخدم للتعبير عن حدث متكرر أو عادة

يتكون من التصريف الأول للفعل

Scientists do experiments in laboratories.        
Insects harm crops.
I always have dinner early .

يستخدم للتعبير عن حقيقة


Water freezes to ice at a temperature of 0°C.       
The sun rises in the east.
 
عادة يضاف للفعل    
s/es/ies   مع  
he / she / it  أو أى فاعل أو إسم مفرد
visit    visits    
watch    watches    
deny    denies               

تستخدم الظروف الدالة علي التكرار  (adverbs of frequency) 
To Be قبل كل الأفعال ولكن بعد

never         
rarely = seldom      
often     
sometimes = occasionally 
often= frequently     
usually         
always

I always brush my teeth before I go to bed.    
She often plays the piano well.

الظروف الدالة علي الزمن تأتي إما في بداية الجملة أو نهايتها

We play tennis every Friday.        
Every Friday we play tennis.

و يمكن أن يستخدم المضارع البسيط مع الظروف الدالة علي الزمن و الكلمات الآتية
ever  ,  generally  ,  nowadays  ,  on Mondays / on Tuesdays 
twice a year  ,  every week / day / year / summer

am / is / are + PP.    المضارع البسيط في صيغة المبنى للمجهول

Somebody cleans this room every day.    
This room is cleaned every day.

 لاحظ صياغة الأسئلة التالية في المضارع البسيط
Where do you come from?      
Which country  do you come from?      للسؤال عن الجنسية
I come from England/ Italy

What's your nationality? جنسية     
I'm English/ Italian.

What do you do? = What's your job? 
= What do you do for a living?      للسؤال عن الوظيفة
I'm a teacher.

Where do you live? = What's your address?
15 Lincoln Street, New York.

Time conjunctions    الروابط الزمنية
 يستخدم المضارع البسيط (أو المضارع التام) بعد الروابط الآتية والفعل الثاني يكون مستقبل أو صيغة طلب أو أمر

After / Before / When / As soon as / the moment / till / until + مضارع بسيط أو مضارع تام
والجملة الثانية تكون فى المستقبل أو الطلب والأمر
After I write the letter, I’ll go out.
Before he goes  to bed, he will have dinner.
As soon as she has received the fax, she will travel to Rangoon.
We’ll leave the moment we get the car fixed.
She won’t go to the bank until she gets the cheque..

• First he will finish his homework . Then he will use the computer. (After/Before/until)
After he finishes his homework , he will use the computer.
Before he uses the computer, he will finish his homework.
He won’t use the computer until he finishes his homework.
 لاحظ أنه يمكن استخدام فعل أمر بدلا من المستقبل البسيط
After you finish your work, call me.    Before you go to bed, turn off the lights.

Present Continuous Tense
يتكون من
Am/ is / are + v. +ing
والكلمات الدالة عليه هى
now / at the moment / at present  وأفعال التنبيه   look! / Listen!

She is playing the piano now.     
I am writing a report at the moment.
Look! The man is running after the bus.

 لاحظ عدم استخدام هذه الأفعال ( أفعال الحس والشعور والإدراك ) في الأزمنة المستمرة
love    يحب    like    يحب    hate    يكره    prefer    يفضل
want    يريد    need    يحتاج    deserve    يستحق    suppose    يفترض
mean    يعنى    understand يفهم     believe    يصدق    remember  يتذكر   
contain    يحتوى    consist    يتكون    know    يعرف    belong    يخص
see    يرى    hear    يسمع    smell    يشم    taste    يكون لها مذاق
recognize    يتعرف على    realize    يدرك    surprise    يفاجئ    astonish    يدهش
seem    يبدو    possess    يمتلك    own    يمتلك    depend    يعتمد
concern    يهم/يتعلق     matter    يهم    lack    ينقص    owe    يدين
weigh     يزن         measure    يقيس    agree    يوافق    be    يكون   
think    يعتقد    Notice    يلاحظ    forgive    يسامح    have    يملك       

بعض الأفعال السابقة لها معني آخر مختلف واذا جاءت في الجملة بهذا المعني ، يمكن استخدامها في المضارع المستمر

I'm thinking of going out tonight.    
She is seeing her doctor this afternoon.
They are having lunch at the moment.    
She is tasting the soup to see if it is ready.

am / is / are + being  + PP.  المضارع المستمر في صيغة المبنى للمجهول  

Somebody is cleaning the room.    
The room is being cleaned.
e  لاحظ حذف حرف
قبل إضافة ing
invite     inviting  ,  write    writing 
ing   الأفعال ذات المقطع الواحد وتنتهي بحرف ساكن يسبقه متحرك نُضاعف فيها الحرف الأخير قبل إضافة
hit    hitting  ,  sit    sitting  ,  dig    digging  ,  run    running
They are digging a well at the moment.
ing   ولاحظ أيضا مضاعفة الحرف الأخير في الأفعال الآتية قبل إضافة
prefer       preferring  ,  refer      referring  ,   begin    beginning 

Exercises on Grammar unit 3
Choose the correct answer:
1- In many countries, the wind (use – uses – is using – is used) to generate electricity.
2- Scientists (want – wants – are wanting – are being wanted) to find more forms of renewable energy.
3- Huge amounts of electricity (is produced – produce – are produced – are producing) in nuclear power stations.
4- Holes (drill – is drilled – will drill – are drilled) into the earth to find hot water.
5- In some cities, rubbish (burn – burns – is burnt – is burring) to produce electricity.
6- Water (heat – is heated – are heated – is heating) to turn it into steam.
7- The steam (is piped – pipes – is piping – are piped) to a power station.
8- Electricity (produces – is producing – is produced – produce) from the water in the power station.
9- Electricity is sometimes (to make – making – makes – made) from wind turbines.
10- In many parts of the world, wood (burns – is burnt – is burning – to burn) to heat people's homes.
11- Plants and trees (are used – are using – will be using – use) for different purpose.
12-  She often (is working – works – was working – work) at the weekend.
13- We (use – are used – will be used – is used) palm trees to produce vegetable oil.
14- Sugar cane is (grow – growing – to grow – grown) and used to make fuel for cars and other vehicles.
15- We (are used – use – using – to use) different types of energy in Egypt today.
16- He (talks – is talked – is talking – was talking) to the boss right now.
17- As soon as he (finish – finished – finishes – to finish) doing the job, he will see a movie.
18- She (won't leave – didn't leave – wouldn't have left – not leaves) until she receives a phone call.
19- Be quiet! I (listen – have listened – was listened – am listening) to the news.
20- He (is seeming – seem – seems – was seeming) very happy now.

Find the mistakes in each of the following sentences then write them correctly:
1- I'm thinking he is English.
2- Water is boiling at 100 °C.  
3- He can't speak to you just now. He has a shower.
4- Is this watch belonging to Ahmed?
5- Oil finds far beneath the earth.
6- Are you wanting to speak to him now?
7- How often is she going to the club?
8- What is your father doing? –He's an engineer.
9- Wood uses to make paper.
10- My office cleans every day.
11- Where is he coming from? – England.
12- I am owing him 50 pounds. I'll pay it back next week.
13- This place rarely visits by anyone.
14- Things aren't always what they are appeared to be.
15- When she is meeting him, she will tell him the truth.

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