Agriculture
Cleaning Up Fish Farms
Keeping Bugs Away from Food
Chicken Eggs as Drug Factories
Amphibians
Poison Dart Frogs
Bullfrogs
Frogs and Toads
Animals
Revenge of the Cowbirds
A Grim Future for Some Killer Whales
Sleep Affects a Bird's Singing
Behavior
Pain Expectations
Mosquito duets
Swine flu goes global
Birds
Waterfowl
Pheasants
Ibises
Chemistry and Materials
Flytrap Machine
Music of the Future
Mother-of-Pearl on Ice
Computers
Batteries built by Viruses
Electronic Paper Turns a Page
Secrets of an Ancient Computer
Dinosaurs and Fossils
The man who rocked biology to its core
Dino Flesh from Fossil Bone
Fossil Forests
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Earth from the inside out
Farms sprout in cities
Easy Ways to Conserve Water
Environment
Catching Some Rays
When Fungi and Algae Marry
Improving the Camel
Finding the Past
A Plankhouse Past
Chicken of the Sea
Digging Up Stone Age Art
Fish
Flashlight Fishes
Nurse Sharks
Carp
Food and Nutrition
Symbols from the Stone Age
How Super Are Superfruits?
Yummy bugs
GSAT English Rules
Whoever vs. Whomever
Problems with Prepositions
Order of Adjectives
GSAT Exam Preparation Jamaica
GSAT Scholarship
Results of GSAT are in schools this week
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Scholarship
Access denied - Disabled boy aces GSAT
GSAT Mathematics
GSAT Practice Papers | GSAT Mathematics | Maths
Math is a real brain bender
How to Slice a Cake Fairly
Human Body
A Long Haul
Cell Phones and Possible Health Hazards
Prime Time for Broken Bones
Invertebrates
Snails
Termites
Dragonflies
Mammals
Scottish Folds
Beagles
German Shepherds
Parents
What Not to Say to Emerging Readers
How children learn
Children and Media
Physics
Echoes of a Stretched Egg
Speedy stars
Powering Ball Lightning
Plants
Assembling the Tree of Life
City Trees Beat Country Trees
Getting the dirt on carbon
Reptiles
Black Mamba
Rattlesnakes
Chameleons
Space and Astronomy
Cousin Earth
Saturn's New Moons
An Earthlike Planet
Technology and Engineering
Algae Motors
A Light Delay
Toy Challenge
The Parts of Speech
Pronouns
What is a Verb?
What is a Noun
Transportation
Robots on the Road, Again
Reach for the Sky
How to Fly Like a Bat
Weather
Warmest Year on Record
Antarctica warms, which threatens penguins
Weekend Weather Really Is Different
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Who vs. That vs. Which

Rule 1

Who refers to people. That and which refer to groups or things.

Examples:
Anya is the one who rescued the bird.
Lokua is on the team that won first place. 
She belongs to an organization that specializes in saving endangered species.

Rule 2

That introduces essential clauses while which introduces nonessential clauses.

Examples:
I do not trust products that claim "all natural ingredients" because this phrase can mean almost anything.
We would not know which products were being discussed without the that clause.
The product claiming "all natural ingredients," which appeared in the Sunday newspaper, is on sale.
The product is already identified. Therefore, which begins a nonessential clause.

NOTE: Essential clauses do not have commas surrounding them while nonessential clauses are surrounded by commas.

Rule 3

If this, that, these, or those has already introduced an essential clause, you may use which to introduce the next clause, whether it is essential or nonessential.

Examples:
That is a decision which you must live with for the rest of your life.
Those ideas, which we've discussed thoroughly enough, do not need to be addressed again.

NOTE: Often, you can streamline your sentence by leaving out which.

Example:
That is a decision which you must live with for the rest of your life.

Better:
That is a decision you must live with for the rest of your life.

 

Who vs. That vs. Which









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