He accidentally held her hand.

I'm troubled by his unproductive attitude.

He was affected by secondary effects.

This is a preliminary plan.

Thinking sensibly, that plan will not succeed.

He is interested in diachronic linguistics studies.

He is interested in synchronic linguistics.

He is thought to be a very unsociable person.

The fact-finding committee submitted a detailed report on this issue.

The Security Council is the main organization for maintaining international peace and security.