Pierwszy okres warunkowy

Zastosowanie

Pierwszego okresu warunkowego używamy w odniesieniu do sytuacji, które będą miały miejsce w przyszłości.

Formy

  'If' -clause: present tenses main clause: 'shall/will' future
be: If I am better tomorrow, I will go to work.
have: If I have a headache, I will take an aspirin.
simple present: If he finishes early, he will go home.
present progressive: If you are standing in the rain, you will catch cold.
present perfect: If he has arrived at the station, he will be here soon.
present perfect progressive: If he has been travelling all night, he will need a rest.
can, must: If I can afford a car, I will buy one.

Variation I: 'If' + present + modal

  'If' -clause: present tenses main clause: modal
simple present: If she finishes early, she can/could phone me.
she may/might phone me.
she should/ought to phone me.
she must phone me.
present progressive: If she is arriving today,
present perfect: If she has arrived,
present perfect progressive: If she has been waiting,
can, must If she can't understand it,

Variation II: 'If' + should + e.g. imperative

'If' -clause: present tenses main clause: e.g. imperative
If you (should) see him, please give him my regards.
Should you see him,
If you (should) happen to see him,
Should you happen to see him,

Variation III: Imperative + conjunction + clause

imperative conjunction main clause: 'shall/will'
Provide the materials and we'll do the job.
Stop shouting, or you'll wake up the neighbours.
Put that down, or else I'll hit you.
Be there on time, otherwise you'll lose the job.
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