"Linkers" are important in every situation where students have to organize and present their ideas.Traditional grammar deals with some linkers under the heading of conjunctions " This statement is part of the introduction of the book Practise your Conjunctions and Linkers by Donald Adamson -Longman
This book aims to help learners to set their ideas out coherently by practising contrast expressions such as :
Although But Whereas
However Nevertheless On the other hand
On the contrary By contrast
Conversely
http://www.slideshare.net/lachesisbraick/linking-words-that-express-contrast?next_slideshow=1
Resolva exercícios e atividades acadêmicas
http://www.teatime-mag.com/magazines/wp-content/themes/tt/grammar/teatime15/advanced.pdf
How many of these linkers have you learned yet ? How can you use them properly ? If you click on the links above ,you are also going to get information about other contrast linkers and their proper uses too ,ok ?
If you do not have this book which has varied practice,with a mixture of exercise types focusing on both form and meaning, it is necessary to read several texts to understand their uses and differences too.
http://www.telegraph.co.uk/women/politics/melania-trump-and-michelle-obama-body-language-what-was-really-g/
However,anyone can think of several examples using contrast linkers just looking at these celebrities' pictures and the video below too .Can't you ?
http://www.merriam-webster.com/dictionary/linker