She was alone at last with the president!
( She ( ( ( was alone ) ( at ( last ( with ( the president ) ) ) ) ) ! ) )
(ROOT (S (NP (PRP She)) (VP (VBD was) (ADVP (RB alone)) (PP (IN at) (NP (NP (JJ last)) (PP (IN with) (NP (DT the) (NN president)))))) (. !)))
At last, she has been alone with the president! I envy her.
( ( At last ) ( , ( she ( ( has ( been ( alone ( ( ( with ( the president ) ) ! ) ( I ( envy her ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (JJ last))) (, ,) (NP (PRP she)) (VP (VBZ has) (VP (VBN been) (S (ADJP (RB alone)) (SBAR (PP (IN with) (NP (DT the) (NN president)) (. !)) (S (NP (PRP I)) (VP (VBP envy) (NP (PRP her)))))))) (. .)))