pleace they must have finished their work by now.为什么用have finished?
pleace they must have finished their work by now.为什么用have finished?
they finally succeeded in carrying out the experiment.
they must have finished their work by now.为什么用have finished?
i have been looking forward to hearing from you.为什么用have been?
it has not been decided yet when the meeting will start at the hall.为什么用been,不要be?
i won't visit that restaurant today.won't 在什么时候用?
they finally succeeded in carrying out the experiment.
they must have finished their work by now.为什么用have finished?
i have been looking forward to hearing from you.为什么用have been?
it has not been decided yet when the meeting will start at the hall.为什么用been,不要be?
i won't visit that restaurant today.won't 在什么时候用?
英语人气：784 ℃时间：2019-09-09 18:17:00
优质解答
1.通过后面的 BY NOW 我们可以了解到 主人翁肯定已经做过这件事 所以用MUST HAVE DONE 来说明非常确定 .翻译：他们现在肯定已经完成他们的工作了.2.他们最终成功地完成了那项实验.3.现在完成时 有一条 叫做 如果句子...
我来回答
类似推荐
- they must have finished the work by the end of last month,___?
- They must have finished the work,---?A,mustn't they B,haven't they C,hadn't they D,didn't they
- (1/2)They went to have supper after they finished their work.同义改写They ＿
- They must finish the work today.改为一般疑问句 They have to get up early.对画线部分提问（get up early)
- (2/2)go to have supper＿they finished their work
猜你喜欢
- 1西气东输的气体的主要成分是什么
- 2加工一个零件，甲独做需用12分钟，乙独做需用10分钟，丙独做需9分钟，现甲、乙、丙在相同时间内共做了1643个零件，问：甲、乙、丙各做了多少零件？
- 3how do you think of it和what do you like it的区别属于什么语法点
- 4额定电功率为2W的小灯泡与一个阻值为4欧的电阻串联后接在直流电压为6V的电源上.正常发光求小灯泡的电阻和额定电压的可能值,并讨论,哪组值更好
- 5一台VCD降价1/10后是855元,原价几元?
- 6学校要装修一个长6.3米,宽4.3米的会议室.现在用边长是0.5米的正方形地砖铺地.准备100块这样的地砖够吗?(用计算说明)
- 7形容很规矩很庄重的成语
- 8一个圆柱体,如果把它的高截断了3厘米,表面积就减少了94.2平方厘米,体积就减少（ ）立方厘米
- 9题破山寺后禅院 中 悦 和 空 两个词的含义和表达作用是什么?
- 10如图所示的实验器材：一些碎玻璃、装果冻用的塑料小盒子（重力忽略不计）、量杯一个、足量的水．仅利用这些器材，请你设计一个测量玻璃密度的方案，要求： （1）写出实验步骤，并