1）當(dāng)let后只有一個(gè)單音節(jié)動(dòng)詞，變被動(dòng)語(yǔ)態(tài)時(shí)，可用不帶to 的不定式。例如：
They let the strange go.他們放陌生人走了。
——> The strange was let go.
2）當(dāng)let 后賓補(bǔ)較長(zhǎng)時(shí)，let 通常不用被動(dòng)語(yǔ)態(tài)，而用allow或permit 代替。例如：
The nurse let me go to see my classmate in the hospital. 那護(hù)士讓我去探望住院的同學(xué)。
----> I was allowed / permitted to see my classmate in the hospital.
They let the strange go.他們放陌生人走了。
——> The strange was let go.
2）當(dāng)let 后賓補(bǔ)較長(zhǎng)時(shí)，let 通常不用被動(dòng)語(yǔ)態(tài)，而用allow或permit 代替。例如：
The nurse let me go to see my classmate in the hospital. 那護(hù)士讓我去探望住院的同學(xué)。
----> I was allowed / permitted to see my classmate in the hospital.