1.It is two years ＿I joined the army.A.before B.since C.that D.after2.It was two years＿I joined the army.A.before B.since C.that D.after老师说的是第一题选B,第二题选A.他没讲清楚,没搞懂.这两个句子到底是怎么回事啊,为什么不能用that?
问题描述：
1.It is two years ＿I joined the army.A.before B.since C.that D.after
2.It was two years＿I joined the army.
A.before B.since C.that D.after
老师说的是第一题选B,第二题选A.他没讲清楚,没搞懂.
这两个句子到底是怎么回事啊,为什么不能用that?
答
第一句,到现在为止我已经参军两年了
第二句应该是在我参军前的两年（同LS）
如果是强调句才用that
但强调句去掉it is（was）……that 要是完整的句子,明显这两句都不是