Question

Определите форму и функцию глаголов to be, to have.
1. All articles are published from The Economist print edition.
2. The Economist online is part of The Economist Group and is responsible for The Economist on the internet.
3. Leaders are discussed, often disputed, each week in meetings that are open to all members of the editorial staff.
4. Since 1928, half the shares have been owned by the Financial Times.
5. The Economist has survived, and indeed prospered, by building on the internationalism of its outlook and by selling abroad.

Answer 1

1. All articles are published from The Economist print edition.
(are publised) -  are - вспомогательный глагол, часть составного глагольного сказуемого в пассивном залоге2. The Economist online is part of The Economist Group and is responsible for The Economist on the internet. is - глагол связка3. Leaders are discussed, often disputed, each week in meetings that are open to all members of the editorial staff. 
are discussed - вспомогательный глагол (часть составного глагольного сказуемого в пассивном залоге)
4. Since 1928, half the shares have been owned by the Financial Times.
have (been owned) вспомогательный глагол в пассивном перфектном времени
5. The Economist has survived, and indeed prospered, by building on the internationalism of its outlook and by selling abroad.
has - вспомогательный глагол, служит для образования перфектного времени