本次练习的目的是帮助学生掌握英语中常用的条件连词，并通过填空练习来加强语法结构的理解和应用。通过反复练习，学生可以更好地在实际交流中正确使用条件连词，从而有效提高英语写作和口语的能力。
练习一：基础条件连词填空
I would travel around the world if I *won* the lottery. (won)
She could visit her friends more often if she *had* more free time. (had)
We would be on time *unless* there’s heavy traffic. (unless)
You won’t get a good seat *unless* you arrive early. (unless)
If you had told me, I *would have* helped you. (would)
He could pass the exam if he *studied* more. (studied)
We will go for a walk *provided* that it doesn’t rain. (provided)
If they invite us, we *will* definitely go. (will)
She would have been successful if she *hadn’t* given up so easily. (hadn’t)
You should always bring an umbrella in case it *rains*. (rains)
If I were you, I *would* take the job offer. (would)
As long as you’re happy, that’s all that *matters*. (matters)
练习二：高级条件连词填空
If I had known about the party, I *would have* brought a gift. (would)
Provided that you can guarantee the quality, we *will* place a larger order. (will)
She will finish the project on time *provided* that she stays focused. (provided)
I would have gone to see the doctor if I *had* felt worse. (had)
Unless we leave now, we *are* definitely going to be late. (are)
If he had not been so careless, he *would not have* made a mistake. (would not)
You would understand the lesson better if you *paid* more attention in class. (paid)
Would you still love me if I *were* poor? (were)
If you need me, I *will* be in my office. (will)
If it were not for her support, I *couldn’t have* completed this project. (couldn’t)
I will not go to the party unless I *am* invited. (am)
Even if you apologize, I *cannot* forgive what happened. (cannot)
