Question

appear 是否可做系动词

Answer 1

可以，表示“看起来像”时候，和seem,look一样做系动词。表示“出现”时候，做实意动词

Answer 2

可以。E.g.1.If it was viewed from above, or pole-on, it would probably appear circular(adj) in shape.
2.In these tight times, people appear unwilling(adj) to spend cash on something they already have.

Answer 3

可以。听感观使让帮。记住这个口诀就好了

Answer 4

你好。
appear可以做系动词。
希望对你有帮助。