| 词组 | effective |
| 释义 | 后面常跟介词against，from，in，on， after 等: The pills are effective against cancer. The agreement will become ef- fective from June 23． The new law will become effec- tive in the next few weeks. The new rules will be effective on and after May 1st. |
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英语用法大全包含3679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。