instrumentsareusedbythenetworkstomonitorthemovements.请问bythenetworks是插入语么?全句：Manykindsofseismicinstrumentsareusedbythenetworkstomonitorthemovementsoftheearth'scrust.其中的bythenetworks是插入语

Question

instruments are used by the networks to monitor the movements.请问by the networks是插入语么?
全句：
Many kinds of seismic instruments are used by the networks to monitor the movements of the earth's crust.
其中的by the networks是插入语么?

Answer 1

你理解一下：
the networks use Many kinds of seismic instruments to monitor the movements of the earth's crust.
（地震监测）网络使用很多种地震仪器来监测地壳的活动.
你的例子是被动语态,Many kinds of seismic instruments实际上是宾语,are被动语态BE动词,used实际上是谓语,by被动语态的介词,the networks实际上是主语.