"Unless" 용법
Unless는 if...not.과 동일한 뜻을 가집니다. if와 같이, unless 뒤에는 현재 시제, 과거 시제, 또는 과거 완료 시제가 옵니다(조건문은 결코 오지 않습니다). Unless는 모든 유형의 조건문에서 if...not 대신 사용됩니다. unless를 사용하는 문장에서 절의 순서는 중요하지 않습니다.
제1유형 조건문: Unless + 현재 시제
| If 사용 | Unless와 상응 |
|---|---|
| You will be sick if you don't stop eating. | You'll be sick unless you stop eating. |
| I won't pay if you don't provide the goods immediately. | I won't pay unless you provide the goods immediately. |
| If you don't study dilligently, you'll never understand trigonometry. | Unless you study dilligently, you'll never understand trigonometry. |
제2유형 조건문: Unless + 과거 시제
| If 사용 | Unless와 상응 |
|---|---|
| If he wasn't very ill, he would be at work. | Unless he was very ill, he would be at work. |
| I wouldn't eat that food if I wasn't really hungry. | I wouldn't eat that food unless I was really hungry. |
| She would be here by now if she wasn't stuck in traffic. | She would be here by now unless she was stuck in traffic. |
제3유형 조건문: Unless + 과거 완료
| If 사용 | Unless와 상응 |
|---|---|
| Our director would not have signed the contract if she hadn't had a lawyer present. | Our director would not have signed the contract unless she had had a lawyer present. |
| I wouldn't have phoned him if you hadn't suggested it. | I wouldn't have phoned him unless you'd suggested it. |
| They would have shot her if she hadn't given them the money. | They would have shot her unless she'd given them the money. |
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