We will be losing money this year unless that new economic plan of yours works miracle.?unless 引导条件状语从句，用一般现在时表示将来。lay up 因痛（或伤残）卧床常用被动语态lay out摆出，展开l...
wrapping paper 包装纸on end 连续不断地和表示时间的词连用at length 最后，终于in full 全部地in time 及时，不迟The two scholars worked at the task of writing a preface to the new dict...
Valid 有效的，合法的通常指证件等合法、有效operative指法津、法规，规定等有效的” effective常指方法或措施有效，强调能达到预期效果efficient可以指人有能力或指某方法Before the tourists set off, they spent much ti...
in line with 与一致，按照，符合The mayor didn’t have time so far to go into it at length, but he gave as an idea about his plan. ?市长还没来得及详尽地说明，但他向我们透露了该计...
lay sb. off 暂时解雇某人lay aside 储蓄，把某物放在一边lay out 展示，安排，布置lay down 制定、规定call on 号召call for 要求，需要call forth 唤起，引起call in 召集，召来When workers push together to...
as best (one) can表示尽最大努力?John has to prepare the mathematic examination as best he can.?约翰不得不尽最大努力准备数学考试none other than 不是别人(或他物)而正是 (一般用在以人为主语的句子中)Th...
He ordered the work to be started at once. 此处不定式做宾语补足语，因此使用不定式的被动形式。数词与名词连用时，它们的次序为名词+基数词”/the+序数词+名词” When did Gertrude finally get to th...
21. act on 奉行,按照行动;act as 扮演;act for 代理22. adapt oneself to(=adjust oneself to) 使自己适应于23. adapt(for) (=make sth. Suitable for a new need) 改编, 改写(以适应新的...
61. on the average (=on average, on an average) 平均62. (be) aware of (=be conscious of , having knowledge or consciousness)意识到,知道.63. at the back of (=...
1.表示原因1）There are three reasons for this. 2）The reasons for this are as follows. 3）The reason for this is obvious. 4）The reason for this is not far to...