Which article is used with Intermediate? The indefinite article "an" is used, as in "an intermediate level." 6 Is Intermediate an adverb? No, it is not an adverb. 6 Is Intermediate a countable noun? Yes, it can be counted, as in "intermediates." 5 Is the Intermediate term a metaphor...
Efficiency is also uncountable so the result is the same: do not use an indefinite article
HOW TO WRITE CORRECT ENGLISH 如何写正确的英语.pdf,HOW TO WRITE CORRECT ENGLISH R.K.Singh ABHISHEK PUBLICATIONS CHANDIGARH All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, in