In traditional notation, a tie is a curved line that connects two notes with the same position on the staff. A tie indicates that you play the first note only, and hold it for the length of both notes. Ties are not necessary in Tab notation where you can just follow the count. Here is an example which uses ties. Count carefully as you play.
This one contains ties, rests and staccato chords. You will have to disrupt your strumming momentum where the staccato chords and rests occur, but keep it going the rest of the time. Keep counting evenly regardless of what your strumming hand is doing.