it v-link ADJ wh
it v-link ADJ wh
The 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. |