If you try to make any moves, you'll endanger yourself and the airplane.
( ( If ( you ( try ( to ( make ( any moves ) ) ) ) ) ) ( , ( you ( ( 'll ( endanger ( ( yourself and ) ( the airplane ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP you)) (VP (VBP try) (S (VP (TO to) (VP (VB make) (NP (DT any) (NNS moves)))))))) (, ,) (NP (PRP you)) (VP (MD 'll) (VP (VB endanger) (NP (NP (PRP yourself)) (CC and) (NP (DT the) (NN airplane))))) (. .)))
You should stay still if you want to keep safe.
( You ( ( should ( ( stay still ) ( if ( you ( want ( to ( keep safe ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD should) (VP (VB stay) (ADVP (RB still)) (SBAR (IN if) (S (NP (PRP you)) (VP (VBP want) (S (VP (TO to) (VP (VB keep) (ADJP (JJ safe)))))))))) (. .)))