to move your hands, head, face, etc. as a way of expressing what you mean or want 做手势；用手势表示；用动作示意
(+ adv./prep.)
’I see you read a lot,’ he said, gesturing at the wall of books.
“看来你读的书很多。” 他指着那一墙的书说道。
~ for sb to do sth
She gestured for them to come in.
她示意让他们进来。
~ (to sb) (that)…
He gestured (to me) that it was time to go.
他示意（我）该走了。
They gestured that I should follow.
他们示意让我跟在后面。