“‘现在科学发达,使荔枝北移,将来也许不是完全不可能的事’,这是贾祖璋《南州六月荔枝丹》中一个著名的或然判断,这句话刚性的表达即为:荔枝北移基本没有可能,将来的可能性也不大。这样表达是清楚而明晰的,但从表达效果上看,阻断了人们的美好向往与期望,科学性强了,文艺性弱了;而‘不是’对‘完全不可能’的否定,弱化了语气,‘也许’的推测,进一步削弱语气中的刚性成分,就像弹簧的两次弹性跃动,‘也 ”'Now developed science, the northward movement of litchi, the future may not be entirely impossible' This is Jugu Zhang“ Nanzhou June litchi Dan ”in a well-known judgments, the rigid expression of this sentence is: Litchi move north is basically impossible, the future is unlikely .This expression is clear and clear, but from the perspective of expression, blocking the people's beautiful longing and expectations, strong science, literary weak; The 'no' negation of 'totally impossible' weakens the tone, the speculation of 'maybe' further weakens the rigid component of the tone, just like the two elastic jumps of the spring,