Sign language in the US forms a sort of dialect continuum. At one end is ASL, which its own language as you said, although with some influence from English).

Sign language in the US forms a sort of dialect continuum. At one end is ASL, which its own language as you said, although with some influence from English). On the opposite end are things like Signed Exact English that reproduce English verbatim on the hands, borrowing from ASL in some places and inventing signs in other places. For example, ASL has no sign for -ed (the past tense ending) because it marks aspect instead of tense, so SEE invented a sign for it. And in the middle is Contact Sign or Pidgin Signed English, a sort of compromise between ASL and English grammar, which is most used when ASL speakers and non-fluent speakers communicate. You might get a mix of some ASL topic-comment word order with some English subject-verb-object word order. You'l get a lot less "simultaneous" ASL grammar like indicating the subject or object pronoun using eye gaze, or conjugating verbs by changing motion, because those are hard for non-fluent ASL speakers to understand. You'll also get a lot less of the SEE constructs like explicit -ed markings, because they're usually obvious from context.