| 词组 | necessary |
| 释义 | necessary If it is necessary to do a particular thing, that thing must be done. It is necessary to act fast. It is necessary to examine this claim before we proceed any further. ◊ used with 'for' You can say that it is necessary for someone to do something. It was necessary for me to keep active and not think about Sally. In the early years, it is necessary for governments to directly subsidize rents. Note that if you use necessary in sentences like these, the subject must be 'it'. You do not say, for example, 'She was necessary to make several calls'. You say 'It was necessary for her to make several calls'. However, in conversation people would normally say 'She had to make several calls'. For more information on this use of have to, see entry at ↑ If one thing is necessary for another, the second thing can only happen or exist if the first one happens or exists. These weapons are necessary for the defence of our country and our free way of life. ◊ used with 'to' If something is necessary to someone, they must have it. Solitude, no doubt, is necessary to the poet and the philosopher. |
| 随便看 |
英语用法大全包含2070条英语用法指南，基本涵盖了全部常用英文词汇及语法点的翻译及用法，是英语学习的有利工具。