We went to San Francisco in 2009.
We went to San Francisco in June.
We went to San Francisco on June 19, 2009, at noon.
Michael Phelps made sports history by winning eight gold medals ___ the 2008 Olympics ___ Beijing, China.
We are on vacation during July.
We went to the beach several times in our stay.
They are on vacation in July.
*They stayed there during July, not during May.
We have been coming to this beach for fifteen years.
We have been coming to this beach since July, 1995.
The children were interested in hearing his story.
The press was excited about the President's speech.
The President is pleased with the
The President is pleased with how the people responded.
Look up the word in the dictionary.
He took his coat off.
He took off his coat.
The airplane took off.
Who did you give your number to?
To whom did you give your number? very formal
Can you tell me — what kind of person you are interested in?
Can you tell me — in what kind of person you are interested?
The word — that you looked up — is not in my dictionary.
The word — up which you looked — is not in my dictionary.
He talks about leaving.
He accused us of complaining.
He keeps on making trouble.
He worries about making deadlines.
Most people aren't accustomed to working hard.
If you try you can succeed in doing anything you want.
What's it for? for tying boxes.
Why do you use it? to tie boxes.
How do you close boxes? with string / by using string.
Jason read the manual before beginning the installation.
You can't turn it on without plugging it in.
Jane got it working by using a different cable.