短語動詞是一個整體，不可丟掉后面的介詞或副詞。
This is a photo of the power station that has been set up in my hometown.
My sister will be taken care of by Grandma.
Such a thing has never been heard of before.
let 的用法
1）當(dāng)let后只有一個單音節(jié)動詞，變被動語態(tài)時，可用不帶to 的不定式。
They let the strange go.---> The strange was let go.
2） 若let 后賓補(bǔ)較長時，let 通常不用被動語態(tài)，而用allow或permit 代替。
The nurse let me go to see my classmate in the hospital.
----> I was allowed / permitted to see my classmate in the hospital.
This is a photo of the power station that has been set up in my hometown.
My sister will be taken care of by Grandma.
Such a thing has never been heard of before.
let 的用法
1）當(dāng)let后只有一個單音節(jié)動詞，變被動語態(tài)時，可用不帶to 的不定式。
They let the strange go.---> The strange was let go.
2） 若let 后賓補(bǔ)較長時，let 通常不用被動語態(tài)，而用allow或permit 代替。
The nurse let me go to see my classmate in the hospital.
----> I was allowed / permitted to see my classmate in the hospital.