Verbals

Hi, I need help in these:
True or False statements

1. The past tense and the past participle forms of regular verbs are always the same.

I say this is true.

2. Verbals used as auxiliaries are never used in any other way.

3. Verbals as well as verbs may be classified according to tense.

4. In a sentence with at least one dependent clause, a verb in the present tense must always
be followed by another verb in the present tense.