Exercise 4
To what extent does the Case Filter explain the contrasts in grammaticality in the sentences below?
| (1) | a. | *It seems John to have left. |
| b. | It seems that John has left. | |
| (2) | a. | Mary believes him to be a fool. |
| b. | *Mary believes he to be a fool. | |
| (3) | a. | *John to prove the theorem would be great. |
| b. | For John to prove the theorem would be great |