. . , a //.
http://engblog.ru/
. ,,.
http://www.learn-english.ru/
http://abc-english-grammar.com/1/vid.htm
!!.
" ": 1 - 2 - ... 17 - 18 - 19 - 20 - 21 - Linguarde. ... 37 - 38 - . , , 39 - -