Primary Helping Verbs

Front

Tense of: I did not see her.

Back

past

Front

Tense of: John had not called in three weeks.

Back

past

Front

Tense of: Joe is not watching t.v.

Back

present

Front

Tense of: Were you expecting me?

Back

past

Front

Tense of: I have been working all day.

Back

past

Front

Lily, Frank, and I _____ joining a neighborhood swimming team.

Back

are

Front

I _____ thought about joining the team for a couple of months.

Back

had

Front

Frank ____ taken swimming lessons at a YMCA indoor pool.

Back

has

Front

We ____ practiced a great deal.

Back

have

Front

Our team's season _____ not begun.

Back

has