if与unless在选择题中的区别
2024-11-28 20:02:52 学考宝 作者：佚名
问题描述
_____ you_____ hurry up, you’ll be late.
A: If; aren't
B: Unless; don’t
C: Unless; aren't
D: If; don't
老师答疑
黎老师：
在unless 引导的从句中，谓语动词必须用肯定式，所以B和C是错误的。 hurry是行为动词，它的一般现在时否定式应该是在动词原形前面加 don't 不是加aren't，所以 A 是错误的，D是正确的：
If you don't hurry up, you will be late.【正确译文】如果你不赶快点，你将会迟到。【错误译文】如果你赶快点，你将会迟到。
陈老师：
_____ you_____ hurry up, you’ll be late.
A: If; aren't
B: Unless; don’t
C: Unless; aren't
D: If; don't
If you don't hurry up, you will be late.
参考译文：如果你不赶快/赶紧点，你将会迟到。
答案解析D:if引导条件状语从句，从句用一般现在时态表将来，主句用一般将来时态。
(备注：unless除非=if not 如果不)
I won't go to the party unless I'm invited.
=I won't go the party if I am not invited.
除非我被邀请，否则我不会去参加晚会的。
I sleep with the window open unless it is really cold.
=I sleep with the window open if it is not really cold.
我总是开著窗户睡觉，除非天气非常冷才关上窗户。
Iron corrodes unless it is greased or kept clean.
Iron corrodes if it is not greased or kept clean.
如果不涂油或保持清洁铁便会腐蚀。
You will fail unless you work hard.
如果你不努力工作,就会失败。
Unless he has any objections,we will carry out the plan.
除非他反对,否则我们就执行这项计划。
Let's have dinner out—unless you are too tired.
咱们出去吃饭吧——除非你太累了。
Substances have no tendency to expand unless (they are) heated.
除非受热,物质不会有膨胀的倾向。
I won't write unless he writes first.
除非他先写信,否则我就不写。
I will be very angry unless you have already spoken to her.
除非你已经对她说过了,否则我会很生气。
Don't ask me to explain unless you really don't understand.
不要叫我解释,除非你真的不懂。
Unless paying by credit card, please pay in cash.
如果不用信用卡付账,就请付现金。
(1)hurry up vi赶紧;赶快
Franklin told Howe to hurry up and take his bath; otherwise, they'd miss their train...
富兰克林告诉豪赶快去洗澡;否则他们会赶不上火车。
Hurry up with that coffee, will you.
请你快点把咖啡端上来。
(2)huppy up vt.使加快;使提早
if you want to hurry up the application process.
如果想要加快申请
y老师：
D。 真实条件状语从句，主将从现
