Phrase
nail down
用钉子钉住；钉牢
to fasten something with a nail or nails
- 1.
to attach with nails
用钉子固定
- 2.
to make something (e.g. a decision or plan) firm or certain
使某事(如决定或计划)确定或明确
明确；确定；查明；约束；使承诺；敲定；用钉子固定；使某事(如决定或计划)确定或明确；用钉钉住
In use
We need to nail down the exact time for the presentation before sending out the invitations.
The committee met for hours to nail down the details of the new policy.
Have you nailed down whether you can attend the wedding next month?
nail down + [具体事物]
此用法表示‘确定、明确’，常用于协议、细节等。
We need to nail down the exact date for the meeting.
我们需要确定会议的具体日期。
nail down + [物体]
此用法为字面义，表示用钉子固定。
He nailed down the loose board in the floor.
他用钉子钉住了地板上松动的那块木板。
nail + 某人 + down + to + 某事
此用法表示‘迫使某人明确承诺或遵守’，常用于要求对方给出确定答复。
They tried to nail him down to a specific date for the payment.
他们试图让他明确承诺一个具体的付款日期。
Common mistakes
I nailed down the test.I nailed the test.
‘nail down’ 意为‘确定’或‘用钉子钉住’，并非‘成功’。当表达‘考得好’时，应使用动词 ‘nail’ 作为及物动词，不加 ‘down’。
I nailed down it.I nailed it down.
对于可分离的短语动词 'nail down'，当宾语是代词时，必须放在动词和介词之间，即 'nail + 代词 + down'，而不能说 'nail down it'。
Connections
Confusing words
Word family
- nails down
- third person singular
- nailed down
- past, past participle
- nailing down
- present participle
Learner notes
Grammar Note
常用于被动结构，如 'be nailed down'
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.