英语几个小语法点.Mr.chaninchargeofoperationssincethebeginningoflastyear.a)isb)wasc)hasbeen请分析结构和原因～thanksweareconcernedthehighrateofabsenteeismamongouremplyees.a)onb)forc)about

Question

英语几个小语法点.
Mr.chan _____in charge of operations since the beginning of last year.
a)is
b)was
c)has been
请分析结构和原因～thanks
we are concerned ______the high rate of absenteeism among our emplyees.
a)on
b)for
c)about

Answer 1

1 C
现在完成时态,表示从过去一段时间开始一直在做,你看到since一般就会使用这个时态
2 C about
be concerned about 考虑,习惯搭配