Canvas tents have been around since before they started making tents out of nylon, polyester and other synthetic materials. I own two canvas tents myself, both a Kodiak and a Springbar.
From Wikipedia, the free encyclopedia. The conditional perfect is a grammatical construction that combines the conditional mood with perfect aspect. A typical example is the English would have written. The conditional perfect is used to refer to a hypothetical, usually counterfactual, event or circumstance placed in the past, contingent on some other circumstance (again normally counterfactual, and also usually placed in the past).
Switching the hypothesis and conclusion of a conditional statement and negating both. For example, the contrapositive of If it is raining then the grass is wet is If the grass is not wet then it is not raining.. Note: As in the example, the contrapositive of any true proposition is also true. See also. Converse, inverse of a conditional, biconditional.