按一般词典的说法，assure是使某人确信，向某人保证的意思，所以它不可以直接接that引导的从句，可我在美国政府网站上看到一句又如何讲解：
Each branch（of the governmet） has its own responsibilities and at the same time, the three branches work together to make the country run smoothly and to assure that the rights of citizens are not ignored or disallowed.
assure
1. See ENSURE, INSURE, ASSURE.
2. A couple of commentators have different points to make about the syntax of assure. Copperud 1970 insists that it takes an object— and it does. Bernstein 1965 says assure takes of, and it also does that sometimes, as we shall see:
Assure can take an ordinary noun object:
. . . the most positive way available to assure ultimate success — Clinton F. Robinson, Duns, January 1954
The direct object may also be a clause:
. . . mothers anxious to assure that their daughters get noticed socially —Vance Packard, The Sexual Wilderness, 1968
But most often assure — much like promise—takes two objects—a direct and an indirect. The indirect object can be a personal noun but is usually a pronoun.
The direct object may be a noun:
. . . and thus assured it the entire vote of New York —Dictionary of American Biography, 1929.
More often it will be a clause, with or without that:
. . . a car trader, who would assure us that our car could not possibly make the crossing —William Faulkner, New England Journeys, No. 2, 1954
Linda assured me this was a verbatim translation — Cobey Black, Saturday Rev., 23 Oct. 1971
Sometimes the clause is replaced by a phrase with of:
. . . to assure them of academic due process —AAUP Bulletin, December 1967
------Websters Dictionary of English Usage
