试题题干
Rewrite the following sentences as required.
Using extraposition
To wear a respirator mask when you're working with fiberglass might be a good idea.
参考答案
试题解析
本题考查外位。就是用替代形式替代后移部分，即用it作形式主语，而后移的分句是真正的主语。
句意：当你使用玻璃纤维时，戴上口罩可能是个好主意。
Rewrite the following sentences as required.
Using extraposition
To wear a respirator mask when you're working with fiberglass might be a good idea.
本题考查外位。就是用替代形式替代后移部分，即用it作形式主语，而后移的分句是真正的主语。
句意：当你使用玻璃纤维时，戴上口罩可能是个好主意。