reaction

1.注意下面各种表达方式里的介词：

• the reaction of copper to sulphuric acid,
• the patient's reaction to the doctor's treatment,
• the reaction of the public to the new policy

也有人说：

• the reaction of sulphuric acid on copper,
• the reaction of the doctor's treatment on the patient,
• the reaction of the new policy on the public

但都不算正当，该把reaction改作action，effect或influence。

2.严格地说，What is your reaction to the proposal? 和They have not yet expressed their reactions to the announcement等句子里的reaction或reactions是临时的情感上的“反应”，不是“意见”，并不是从思考中得到的。