She ___(study) English since she was seven years.
As a student,you aren't supposed to do your homework __(care)
allow后边动词用什么形式
She ___(study) English since she was seven years.
As a student,you aren't supposed to do your homework __(care)
allow后边动词用什么形式
(1)has been studying
(2)carelessly
be allowed to do sth,或allow doing sth
has studied
careless
allow for sth. 允许某事 allow doing sth. 允许做某事 They don't allow smoking here.=They don't allow others to smoke here allow sb. to do sth. 允许某人做某事 (注意被动:sb. be allowed to do sth.)
1.has studied
2.carelessly
3.动名词貌似。
has been studying
carefully
allow ab to do sth
allow doing sth
1.has studied
由标志词since看出是完成时态
2.carelessly
3.allow sb. to do
或allow doing