Yes! Perfect tenses are ALWAYS formed with the past participle. The problem is they are not always recognisable as past participles. In Spanish or Italian, for example, past participles have an instantly recognisable form (-ato,-ito, -uto, -ido, -ado etc). In English, they can take one of several forms: 1. Regular verbs - the pp is the same as the past form (walk-walked-walked) 2. Irregular verbs- (a) the pp is the same as the past form (bring-brought-brought) (b) the present, past and pp are all different (sing-sang-sung) (write-wrote-written) (c) all three forms are the same (put-put-put) (d) the pp is the same as the present (come-came-come) (run-ran-run) So, in answer to your question, the perfect tenses DON'T use present forms, or past forms - it's always a past participle.

There is only a rule for regular verbs: the perfect is the same as the past. I studied for the test. / I have studied for three weeks. There are a handful of irregular verbs that are the same in present tense and in perfect. Become: I have become better at cooking. Run: I have run farther today than any other day this week. Unfortunately, there is no easy way to learn this. You just have to memorize it. =/

The present perfect tense always uses the past participle. Sometimes, the past participle is the same as the present simple (for example, run); sometimes it is different (for example, be/been). You just need to learn them and unfortunately there are many!