if 和 whether 做“是否”解时,可以互换.
本句解释为：我不知道明天是否回来.
所以两者都可.
希望能帮到您.
I don't know__he will come tomorrow.这里为什么用if而不是whether
I don't know__he will come tomorrow.这里为什么用if而不是whether
其他人气：854 ℃时间：2019-12-06 04:45:14
优质解答
我来回答
类似推荐
- I don't know if he will come tomorrow.
- I don't know < >he will come tomorrow or not 括号中该填whether还是if 还是weather
- I don't know if he______tomorrow,If he_____i will meet him.(come)
- I don't know __ he will come tomorrow.___he comes,I'll let you know.
- I don't know _________he will come or not tomorrow.________he come,I will tell you.
猜你喜欢
- 1造句:在春天.在盛夏.在秋日.在严冬.
- 2已知f(x)是偶函数.他的定义域为R,在（0.+∞）上递减,那么一定有?A.f(-3/4)〉f(a的平方-a+1)
- 3求垂直于直线x-3y+1=0并且与曲线y=x^3+3x^2-5相切的直线的方程
- 4This story is less interesting than that one(改为同义句）每空一词
- 51设f（x）是定义在实数集R上的函数,满足f（0）=1,且对任意实数a,b
- 6如图,在平面直角坐标系中,直线y=-2x+2与x轴,y轴分别相交于点A,B,四边形ABCD是正方形,反比例函数y=k/x在第
- 7I wish u all a Merry Xmas!
- 8铜和锌原电池工作原理实验
- 9一个正方体玻璃容器,棱长4分米.如果要在其中放入2分米深的水,需要（ ）升的水
- 10过点P（0,2）作直线交椭圆X^2/2+Y^2=1于A、B两点,O为原点.当三角形AOB面积取最大值时,求直线的方程