Practical Grammar and Composition

by Thomas Wood

(Substitute seen for been in the present perfect subjunctive of to be.)

Progressive

(Substitute been seeing for been in the present perfect subjunctive of to be.)

Present Perfect Tense—Passive Voice

(Substitute been seen for been in the present perfect subjunctive of to be.)

Past Perfect Tense—Active Voice

Simple

(Substitute seen for been in the past perfect subjunctive of to be.)

Progressive

(Substitute been seeing for been in the past perfect subjunctive of to be.)