早教吧作业答案频道 -->英语-->
-Ifeltitverydifficulttocarryontheworkallbymyself.-Icouldhavehelpedyou,butyoumeto.A.hadn'taskedB.didn'task为什么不能用过去完成时呐?
题目详情
-I felt it very difficult to carry on the work all by myself.
-Icould have helped you,but you ________me to.
A.hadn't asked B.didn't ask
为什么不能用过去完成时呐?
-Icould have helped you,but you ________me to.
A.hadn't asked B.didn't ask
为什么不能用过去完成时呐?
▼优质解答
答案和解析
首先明确一个概念,那就是过去完成时必须用在过去的过去的动作上.而就此题而言,先翻译过来,就是---我觉得完全靠我自己来进行这个工作是很困难的.---我本可以帮你的,但你没向我提要求.答语中前半句could have done是一...
看了 -Ifeltitverydi...的网友还看了以下:
matlab 求解二元非线性方程组本人初次接触MATLAB,望大虾赐教!r=r0*((tsa-t) 2020-05-16 …
n阶方阵A对任意n维向量x,满足x^TAx=0,充要条件为AT=-A;证明:充分性:f=x^TAx 2020-05-17 …
She'shadherlunch,sheA.isn'tB.hasn'tC.hadn'tD.does 2020-06-03 …
r(A*A^T)=r(A^T*A)=r(A)证明方程AX=0与A^TAX=0同解AX=0显然有A^ 2020-06-10 …
.请教A+B=A(B^T)B+A(A^T)B能写成A+B=AB(B^T)+(A^T)AB.请教A+ 2020-06-12 …
设n阶矩阵A=E-a*a^T,其中a是n维非零列向量,证明1.A^2=A的充要条件是a^T*a设n 2020-06-23 …
所有纬线平行且都是圆这句话有些人说是对的,但是极点不是个点吗?额喵呐喵T-T 2020-07-03 …
—I’msurprisedtolearnthatyou’regoingbacktoChicago. 2020-07-25 …
有关极限的算法a^t-b^t/t如何能化简出答案为lna/b.a^t-b^t/t如何能化简出答案为 2020-07-30 …
对于积分上限函数∫(a,t)f(y)dy,知道被积函数是f(t).那么对于∫(a,t)f(x+y) 2020-08-02 …