The researchers found children who play with puzzles between 26 and 46months of age have better spatial skills when assessed at 54 months of age.
这里的when是主语吗？when不是副词吗，如何能做主语？
来自2020卷二B
when不是主语，是连接词，when后你可以视为省略了they are。
The researchers found children who play with puzzles between 26 and 46months of age have better spatial skills when assessed at 54 months of age.
这里的when是主语吗？when不是副词吗，如何能做主语？
来自2020卷二B
when不是主语，是连接词，when后你可以视为省略了they are。