| 词组 | before adverb |
| 释义 | Contents overview before : adverb396 before: adverb1'at any time before now/then'We can use before to mean 'at any time before now'. In British English, a present perfect tense is normally used.I think I've seen this film before.Have you ever been here before?Before can also mean 'at any time before then – before the past moment that we are talking about'. In this case a past perfect tense is used.She realised that she had seen him before.2counting back from a past time: eight years beforeWe also use before after a time expression to 'count back' from a past moment – to say how much earlier something else had happened. A past perfect tense is normally used.When I went back to the town that I had left eight years before, everything was different. (not … that I had left before eight years …)To count back from the present, we use ago, not before (362).I left school four years ago. (not … four years before / before four years)3before, before that and firstBefore is not generally used alone to mean 'first' or 'before that happens'. Instead we use first or before that.I want to get married one day. But before that / first, I want to travel. (not … But before, I want to travel.)For the difference between before and ever, 454.4.For before as a conjunction, 250.Previous Next |
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