1. If he (start) started at once, he (arrive) would arrive there by midday.
2. Tom (be) would be sick if he (eat) ate all those chocolates.
3. If I (lose) lost my glasses, I (not be) wouldn't be able to read.
4. You (become) would become ill if you (forget) forgot your jacket.
5. If the weather (get) got colder, I (buy) would buy a new coat.
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Mệnh đề điều kiện Mệnh đề chính
If + S + V-ed /PII
To be: were/weren't S + would / could / should + V1 (wouldn't / couldn't + V1)