Other conditional expressions：练习题

Select the sentence that uses a conditional expression to make a hypothetical assumption about a situation, as typically found in academic or mathematical contexts.

Combine these two sentences into one using the conditional expression unless:
"We must leave now. Otherwise, we will be late for the opening ceremony."

Change the following third conditional sentence into a statement using but for:
"If it hadn't been for the heavy rain, we would have finished the gardening yesterday."

Rewrite the following sentence using provided that instead of "if":
"I will lend you my book if you promise to return it next week."

Rewrite the following sentences using unless to replace 'if... not'. Ensure the meaning remains the same.

a) If we do not hurry, we will miss the school bus.
b) I will not go to the party if you do not come with me.
c) If the weather is not good, the football match will be cancelled.

Complete the dialogue using Other conditional expressions such as provided that, as long as, or otherwise.

A: Can I borrow your camera for the school trip?
B: Yes, you can borrow it (a) __________ you promise to be very careful with it.
A: I promise! I'll put it back in the case every time I finish using it.
B: Great. You must keep the battery charged; (b) __________ you won't be able to take any photos when we reach the peak.