现在完成时态的9种表达方式

Question

如题所述

Answer 1

五、
现在完成时：
1.概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。
2.时间状语：recently,
lately,
since…for…,in
the
past
few
years,
etc.
3.基本结构：have/has
+
done
4.否定形式：have/has
+
not
+done.
5.一般疑问句：have或has。
6.例句：I've
written
an
article.
The
countryside
has
changed
a
lot
in
the
past
few
years.