when与while作“虽然”讲时的区别

选择D.
_While___ the grandparents love the children, they are strict with them.
A.If B.Once C.When D.While
while:同时,虽然
祖辈们虽然爱着孩子们,可对孩子们还是挺严的.
(while起并列的作用,when则表达限制或是先后的)

D

时间点和时间段的区别

while
[(h)wail]
n.
一会儿, 时间
conj.
当...的时候, 虽然
vt.
消磨
prep.
<古><方>直到

while
while
AHD:[hwºl, wºl]
D.J.[hwa!l, wa!l]
K.K.[hwa!l, wa!l]
n.（名词）
A period of time:
一段时间：
stay for a while; sang all the while.See Usage Note at awhile
停留下会儿；一直都在唱歌参见 awhile
The time, effort, or trouble taken in doing something:
费时：做一件事情的花费时间、努力或工夫：
The project wasn't worth my while.
这项方案不值得我花工夫，
conj.（连接词）
As long as; during the time that:
只要；在…时间里：
It was lovely while it lasted.
当它开着的时间它是很惹人喜爱的
At the same time that; although:
在…同时；尽管，虽然：
While the grandparents love the children, they are strict with t