1.   This professor constantly uses vulgar expressions.

2.   Try to avoid using idiomatic expressions in an essay.

3.   We can distinguish between using an expression and attending to an expression.

4.   Whitbread and Bass have both used that expression.

5.   These expressions are often used interchangeably, but they do have different meanings.

6.   Mathematical expressions are used to represent real-world relationships.

7.   Deictic or other definite referring expressions are often used to introduce a referent, and anaphoric pronouns used to refer to the same entity thereafter.

8.   This is especially so where such expressions as Our offer is made on the basis of our current price list are used.

9.   Asymmetrical expressions seem unnatural to us, and we tend not to trust a person who habitually uses conscious expressions where natural ones are more appropriate.

10.   Before Vanessa, he used cruder expressions.