it v-link ADJ wh
Adjectives with this pattern belong to the following meaning groups:The 'clear' groupThe 'inexplicable' groupThe 'important' group
it v-link ADJ whThe adjective group preceded by introductory it and a link verb, and is followed by a finite wh-clause.The wh-clause in this pattern indicates something that is uncertain or or not known, or the opposite. For example, in It is puzzling why farmers do not convert to organic agriculture, the reason why farmers do not convert to organic farming is not known.
|it||link verb||Adjective group||wh-clause|
|It||'s not||apparent||why it happens.|
|It||'s||doubtful||whether I'd recognise him again.|
|It||'s||immaterial||what he thinks.|