through, threw, thru, throw, throe, thorough

Through or through ( rhymes with threw ) means in one end and out the other--
They had trouble getting through the narrow door.
Through also means to the end of--
We will be in school through June.
He got through his work in an hour.
Through may mean to go past or over--
He went through that stop sign.
It flew through the air.
You may see through spelled "thru" on signs, to make them easier to see at a glance--
 "No thru traffic".

Throw means to propel or cast something, or to send it forth--
Throw the ball to me.
She may throw you an angry look.
The past tense (yesterday, or some time ago) of throw is threw ( rhymes with through )--
He threw me the ball.
She threw him an angry look.

Thorough means painstaking, complete, or accurate to a detail--
He has a thorough understanding of the subject.
It looks like someone did a thorough job of cleaning up.

Now that you know that, you can say--
"Throw the ball through the goal for a thorough victory".
"He threw the ball through the window."

Note--a "throe" ( rhymes with throw ) is a pang of passion or spasm of emotion, denoting an internal struggle of some kind. Its plural form is more common--
He wrote that poem while in the throes of passion.

Note # 2--the past participle of "throw" is "thrown"--
"If I had seen you, I would have thrown you the ball".
Not to be confused with throne ( rhymes with thrown ) , the fancy chair a king or queen sits on--
Her majesty is in the throne room.

Note # 3--"threw out"--is the past tense of "throw out"--the trash, one's back, a suggestion--
My mom threw out my homework.
"Throughout"  ( rhymes with threw out ) means  in every part of; or from the beginning to the end--
There are illustrations throughout the book.