Before patients' blood pressure is measured in a doctor's office, and at rest for at least 10 minutes appears to give more reliable.
(A) have them sat (B) having them sat (C) to have them sat (D) having them seated
正確答案是D，不過有點疑惑B的sat和D的seated兩者的被動式有什麼差別？都是使坐下的的意思嗎？
主句已有現在簡單式動詞appears, 所以需要一個名詞片語作主詞(Ving或to V皆可)
不可有兩個動詞, 先排除(A).
having或to have是使役動詞, 後面的受詞動作必須是:
- V原式(主動語意): having+O+VR 或
- Vpp(被動語意): having+O+Vpp
sit是主動動作, 不可用sat, 故排除(B),(C).
seat動詞要用被動be seated, 使役動詞Having後面的受詞動作取Vpp形的seated完全正確
故(D)為正解