仅使用这些谓词.....
child(X) X is a child
unwell(X,Y) X is unwell on day Y
location(X,Y,Z) Location of X on day Y is Z (school, park, home)
sunny(X) X is a sunny day
Generally, children do not go to school whenever they are unwell
∄x [Child(x) ∧ location(X,y,home) → Child(x) ∧ unwell(X,y)]
不知道我写的是对还是错
也不确定,如何转换这条线......
On sunny days Julie goes to the park, otherwise she stays at home.
感谢您的帮助...谢谢...