 The most common linking verb is be.  Verbs like am, is are, was, were, being, and been are different forms of the word be.  Other common linking verbs are seem, become, appear, remain, look, and feel.

 Lisa is a student.  Lisa= main noun  is=linking verb  student= noun that tells me more about Lisa  Lisa=student

 The buildings are tall.  buildings= main noun  are=linking verb  tall= adjective that tells me more about the buildings  buidlings=tall

 My favorite sport was hockey.  sport= main noun  was=linking verb  hockey= noun that tells me more about the sport  sport=hockey

 The largest city is New York.  city= main noun  is=linking verb  New York= noun that tells me more about the city  city=New York

 The book we read yesterday was sad.  book= main noun  was=linking verb  sad= adjective that tells me more about the book  book=sad

 Jenny and I are the only girls on the team.  Jenny & I= main nouns  are=linking verb  girls= noun that tells me more about the girls  Jenny & I=girls

 Ms. Jones was our principal.  Ms. Jones= main noun  was=linking verb  principal= noun that tells me more about Ms. Jones  Ms. Jones=principal

 James seems mean.  James= main noun  seems=linking verb  mean= adjective that tells me more about James  James=mean

 Hillary looked beautiful in her new dress.  Hillary= main noun  looked=linking verb  beautiful= adjective that tells me more about Hillary  Hillary=beautiful

 The horses appeared frightened.  horses= main noun  appeared=linking verb  frightened= adjective that tells me more about the horses  horses=frightened

 I am the tallest student in my class.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 The children remained calm during the thunderstorm.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 These three books are interesting.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 Jackie became our new class president.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 Our town is very small.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 John was the fastest player.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 We are helpers in the play.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 I am the new spelling champion!  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 I became very silly when my sister burped in church.  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?

 Now you try it!  ?= main noun  ?=linking verb  ?= noun or adjective that tells me more about ?  ?=?