Only a small percentage of the harvest will be useful by the time we get back to land.

Proof of that meeting will be quite useful for me, by the way.

This is a nice, hard fact, but it is not particularly useful by itself.

He was becoming less useful by the day, and more irritating.

It is considered useful by teachers regardless of whether they have received professional preparation as health educators.

A data log can be useful in diagnosis of the patient's condition by doctors.

They are also useful for endorsement of candidates by other organizations.

Neither of them was very useful by itself, but when you put them together, the message started to emerge.

The results of exploratory research are not usually useful for decision-making by themselves, but they can provide significant insight into a given situation.

The towel was useful in the film version a handful of times mainly by Ford.