The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

A vulture GRASPING a baby in its talons,
House of Blackmont.
Game of Thrones Season 4, Episode 1

Well, I'm telling you,
we're GRASPING at straws here.
Breaking Bad Season 2, Episode 2

I've got a robot hand
GRASPING a man's penis out here.
The Big Bang Theory Season 4, Episode 1

I'm sorry, we don't have a code
for robot hand GRASPING a man's penis.
The Big Bang Theory Season 4, Episode 1