reference: http://homepage.smc.edu/quizzes/cheney_joyce/comparewithcompare.html
To identify either the similarities or the differences between two things, use "compare to." To identify both the similarities and the differences, use "compare with." In comparing with something, one finds or discusses both things that are alike and things that are different.
[Test]
1. In order to decide which city to tour, we had to (compare them with, compare them to) each other.
2. (Compared to, Compared with) running, walking is good for people who have knee problems.
3. Andy compared his math teacher (with, to) his English teacher and pointed out what they had in common and what they did not.
4. When Geri compares her old boyfriend (to, with) her new boyfriend, she points out all the ways in which they are alike.
1. with
2. to
3. with
4. to
