Introductory it as Subject
The 'appear' group
These verbs are concerned with what a situation is, or seems to be. They are all link verbs (see Chapter 5). The word that is often omitted, as in the clause It seems you understand me.
A police spokesman said it appeared that the bag had contained two tubes filled with pieces of lead which flew into the air injuring the eleven people.
The verb be is not usually used alone in the affirmative in this pattern. The following types of clause are frequent: negative clauses; clauses in which be follows a modal; and clauses including an adverb like just or simply.
appear be seem
He was to be a priest, so, she thought, it could not be that he was interested in her.
This doesn't necessarily mean that sport can improve your emotional health; it could simply be that people with a more extrovert personality are more likely to enjoy sports in the first place.