过去分词问题（必修五）

来源：百度知道 编辑：UC知道 时间：2024/06/14 02:06:58
when i went to see the physics teacher yesterday,she was in the classroom,_______the students a difficult problem
a.explaining
b.explained
c.explained to
d.explaining to

应该选D

这里是非限定性从句，要用explaning,表示伴随发生,另外，要用explain to sb.
比如，The new school has many great teachers, including Mr. CHEN.

d

d
解释如下

d.explaining to
这是最基本的题。the physics teacher （she）是“解释”的逻辑主语，所以要用ing不用ed，且短语explain sth to sb=explain to sb sth

D,过去进行时，表过去正在发生的！explain译作解释时是不及物动词,故接to