Suggested answer for Exercise 2
| (1) | a | Bobby believes [Betsy to be beautiful]. → non-finite clause |
| b | Terry tried [to travel to Toronto]. → non-finite clause | |
| c | Thomas thinks [that Ron runs too fast]. → finite clause | |
| d | Hetty hopes [for Hugh to hug her]. → non-finite clause | |
| e | Alan asked [if Sam could stay longer]. → finite clause | |
| f | Sam answered [that he had to leave]. → finite clause | |
| g | Bobby believes [that Betsy is beautiful]. → finite clause | |
| h | Hetty hopes [that Hugh will hug her]. → finite clause |
On the basis of the examples, it can be concluded that for some verbs (believe, want and hope, respectively) both finite and non-finite complements are possible. In other words, their clausal complement may or may not express tense: if tense is expressed, the clause is finite, if it is not expressed, the clause is non-finite.