Compare Four Khabar Patterns

Types of Khabar and the Linking Pronoun

زَيْدٌ عَالِمٌ: single-word predicate.
زَيْدٌ أَبُوهُ عَالِمٌ: nominal-clause predicate with overt link.
زَيْدٌ جَلَسَ: verbal-clause predicate with hidden-link subject.
زَيْدٌ فِي الْمَسْجِدِ: quasi-clausal locative predicate.

The latter examples illustrate the contrasts; they are not all verbatim quotations from the book.