LING202 Lecture Notes - Lecture 9: Presupposition, Situation Two, Logical Consequence

• School: University of Delaware
• Department: Linguistics
• Course: LING202
• Professor: Tsai Ya- Ping

Document Summary

What does it mean to know the meaning of a sentence. If (1) is true, (2) must be true. But the reverse is not necessarily true. A semantic theory must be able to account for this kind of knowledge. Explain how our truth- conditional semantic account for. If nobody kissed laura is true, then jake kissed laura is false. Ex: a. most linguists are vegetarians, b. No linguists are vegetarians: whatever situation that makes a true, make b false ii. Contradiction (truth conditional: a. blly talked to paul and sally, b. billy talked to paul i. ii. He has already been to paris in order to go again. If b is a presupposition of a, negation of a does not change the necessity of b"s being true. The distinction can be brought out clearly if using negation. It"s not true that most linguists are vegetarians.