Conditionals and Time Clauses: Healthy Habits
Conditionals and time clauses
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Grammar Focus: Conditionals & Time Clauses
1. Zero Conditional
Use for general truths or habits: If / When + Present Simple, Present Simple.
If you sleep badly, you feel tired.
2. First Conditional
Use for possible situations in the future: If + Present Simple, will + base verb.
If I exercise more, I'll feel better.
3. Unless (= If not)
Negative meaning: Unless + positive = If + negative (unless = if not).
Unless you eat vegetables, you won't stay healthy.
4. When / As soon as
In future time clauses: use Present Simple after when / as soon as, not will.
As soon as I finish work, I will go for a run.

If I walk today, I will have more energy tomorrow.
APIE · AI doodleComplete the text using the Present Simple for general facts and after if, unless, when and as soon as; use will + base verb for the stated future results.
Use the Present Simple for general truths and after if, unless, when, as soon as. Use will + base verb for future results in this exercise.
I want to change my lifestyle. Normally, if a person 1. ____ (eat) balanced meals, their energy levels remain high. However, I often skip breakfast. Starting tomorrow, if I wake up early, I 2. ____ (prepare) a healthy smoothie.
Unless I 3. ____ (plan) my meals in advance, I won't succeed. My trainer says that as soon as I 4. ____ (start) walking daily, my mood 5. ____ (improve). When you 6. ____ (drink) enough water, your skin looks fresh. If I keep this routine, I 7. ____ (feel) stronger next week.
Complete this general habit using the Present Simple (zero conditional).
If people do not drink enough water, they usually ___ headaches.
If the weather is sunny this Saturday, we ___ cycling in the park.
You won't sleep well tonight ___ you turn off your phone before bed.
I will drink a big glass of warm water as soon as I ___ up tomorrow morning.
Rewrite the sentence using unless:
"If you don't drink water, you will feel tired."
Complete only the missing words. Do not type the whole sentence.
Unless you ____ , you will feel tired.
Rewrite the sentence using if:
"Unless she stretches after running, her muscles will hurt."
Complete only the missing words. Do not type the whole sentence.
If she ____ after running, her muscles will hurt.
Rewrite the sentence using as soon as:
"I will finish my healthy dinner, and then I will go for a walk immediately."
Complete only the missing words. Do not type the whole sentence.
As soon as I ____ my healthy dinner, I will go for a walk.
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