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联系我们一、need的用法
| 情态动词need | 实义动词 need | |
| 现在时 | You need (not) do He need (not) do | You (don’t) need to do He needs (doesn’t need) to do |
| 过去时 | You needed (didn’t need) to do He needed (didn’t need) to do | |
| 将来时 | You need (not) do He need (not) do | You will (not) need to do He will (not) need to do |
二、dare的用法
| 句型 | 时态 | 情态动词dare | 实义动词 dare |
| 肯定句 | 现在时 | dare to 少用 | dare/dares to do |
| 过去时 | dare to 少用 | dared to do | |
| 否定句 | 现在时 | daren’t/dare not do | do/does not dare (to) do |
| 过去时 | dared not do | did not dare (to) do | |
| 疑问句 | 现在时 | Dare he do? | Do you/Does he dear (to) do? |
| 过去时 | Dared he do? | Did he dare (to) do |
needn’t have v-ed 表示过去做了某事，但没有做的必要， 意为“本没必要…”。例如：
You needn’t have waken me up; I don’t have to go to work today
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