If clause

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# If clause - PowerPoint PPT Presentation

If clause. There are four types of conditional sentence. It is sometimes called the "if" clause. It is formed by two clauses.The. former clause expresses the condition while. the latter indicates the result. of that condition or vice versa. We use this type of condition to express a.

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Presentation Transcript
There are four types of conditional sentence.

It is sometimes called the "if" clause.

It is formed by two clauses.The

former clause expresses the condition while

the latter indicates the result

of that condition or vice versa.

We use this type of condition to express a

universal truth.

The present simple tense is used in both

the main clause and the subordinate clause.

e.g. If you heat water to 100℃,

it boils.

Type 0

If clause

Main clause

Exercise

1.If it _________ (rain) heavily, our house

_________ (leak).

2.If we ________ (put) ice in the sun,it

_________ (melt) quickly.

3.If we _____________(feel) well, we

________(see) a doctor.

4.If a dog ________ (see) stranger,it

________(bark).

rains

leaks

put

melts

do not feel

see

sees

barks

This type of condition is used for present or

future activities which are likely to happen.

We use the present simple tense in the if clause

and the shall/will/can/may+infinitive construction

in the main clause.

Type 1

Present

v

e.g. If you work hard, you will succeed.

Future

Exercise

1.If you ____________ (work) hard,you_______

_______(fail).

2.If it ________(rain),I ___________(come)

and meet you in the car.

3.If it ___________ (rain) tomorrow,I _______

___________ (stay) at home.

don't work

will

fail

rains

will come

rains

will

stay

The condition is used for present or future activities

which are unlikely or impossible to happen.

We use the past simple tense in the if clause and

the should/would+infinitive contruction in the

main clause.

Type 2

Past tense / past subjunctive

would+infinitive

n

Exercise

1.If I _________ (be) a bird, I _____________

(fly) everywhere.

2.If you _________ (tell) me the truth,I ______

_____________________ (give) you some

3.If there _________ (be) a typhoon tomorrow,

I _______________ (be) very happy.

would fly

were

told

would/

could/might give

was

could be

This is the only type of condition which deals with

past situations.The action mentioned did not

really happen.

We use the past perfect tense in the if clause and

the should/would+have+past participle construction

in the main clause.

Type 3

Past Perfect

Iwould have joinedthe Student Union.

h

would + have + past participle

Exercise

1.If it ____________(rain) yesterday, I ___________

_____________(stay) at home.

2.If the principal __________________(allow) us to

supervise the tuck shop, food poisoning ____________

____________(occur) last Friday.

3.If the chairman _______________(ask) me to

help, I_______________(join) to fight for

better hygienic conditions.

should/would

have stayed

would not

have occured

would have joined

Exercises

We are affected!!

Economic recession affects all local employees. My

father (1)____________fired if his company does not

have sufficient orders next year.Luckily, my mother

is a junior civil servant who is working in the Regional

Council.She might be dismissed only if she (2)________

a crime or made serious mistakes. Yet with the

combination of the Urban Council and Regional Council,

many posts are redundant. She (3)_______________

her job if her department shrinks.

She is rather anxious about losing her job. “If I

(4)__________a university degree, I would not have

been a janitor,” my mother said. “Don’t worry!The

SAR government is a good boss. If I were you, I

will/may be

committed

will/might/may lose

(5)_________as hard as I could,” my father tried

to comfort her.

Frankly, if my parents lost their jobs, I

(6)_____________ my studies, too.

If I (7)_________part of the HKSAR government, I would create more job opportunities

for all local workers.Measures like diversification

of trade and markets may compensate the unemployment rate. Hong Kong is highly competitive. You will be dismissed by your boss if you (8)_____

_____hard. Uncle Tom is a typical example.If he

had worked hard, he (9)______________________ by his manager.

Even students must try their utmost or they (10)__________ expelled from school.

would work

would give up

were

don't

work

would not have been fired/dismissed

will be