“如果”是人類在思考能、可能或原本可能發生的事情時最常想到的詞語之一。在英語中，我們會使用引導條件句的單詞“if”來表達這類想法。你會使用“混合條件句”、“真實條件句”嗎？來測試自己對英語語法難點之一 — 條件句的掌握。

1. How many categories of conditional sentences are often taught?

a) two (‘first’ and ‘second’ conditional)

b) three (‘first’, ‘second’ and ‘third’ conditional)

c) four (‘zero’, ‘first’, ‘second’ and ‘third’ conditional)

d) five (‘zero’, ‘first’, ‘second’, ‘third’ and ‘mixed’ conditional)

2. Conditional sentences or questions are constructed from two clauses – a conditional clause and a main clause. What difference is there if the order of the two clauses is switched? 

a) The meaning of the whole sentence changes.

b) The main clause must be written differently if it comes first.

c) There is no difference at all

d) When the main clause comes first, we do not use a comma between them

3. Which of these is an example of a ‘mixed’ conditional?

a) If I had grown up in France, I would speak French.

b) If I grow up in France, I will speak French

c) If I grew up in France, I would speak French

d) If I had grown up in France, I would have spoken French

4. What verb form do we normally use in the 'if' cluase of first conditional sentences?

a) present simple

b) present continuous

c) present perfect

d) all of the above

5. In a ‘first’ conditional structure, we do not usually put a ‘will’ form in the conditional clause. However, it can happen, but only under particular circumstances. What are they? 

a) If the speaker wishes to make a polite request

b) If the speaker wishes to be insistent

c) If the speaker is talking about the result of a possible future action

d) All of the above

6. "If I'd known it was so expensive, I wouldn't have bought it." What does this mean?

a) I knew it was expensive. I bought it.

b) I didn't know it was expensive. I bought it.

c) I didn't buy it. It was expensive.

d) I bought it. It wasn't expensive.

1) d, 2) d, 3) a, 4) d, 5) d, 6) b.