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)

1. starts...will arrive

2. will be...eats

3. lose...will not be

4. will become....forget

5. gets...will buy

Câu điều kiện loại I: If S + V(HTĐ), S+will/can/should/may... + Vnt