[简答判断题]Directions: Judge whether each of the following statements is true or false. Put T for true or F for false in the bracket in front of each statement. If you think a statement is false, you must explain why you think so and give the correct version.According to the “principles-and-parameters” theory, “principles” refer to highly abstract properties of grammar which are applied to language in general and which generate phrases and at the same time restrain the power of Move α, while “parameters” allow general principles to operate in certain restricted ways, according to which particular grammars of natural languages vary.