Form 6a. Revision on grammar of units 11 - 12

For practicing:
https://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/exercises;
https://www.perfect-english-grammar.com/comparative-adjectives-exercise-1.html;
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-118322.php;
https://anthonyhalderman.com/english/compsup.htm;
http://esl.fis.edu/grammar/multi/adadv.htm;
https://www.usingenglish.com/quizzes/33.html;
https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adjective_adverb.htm;
https://www.proprofs.com/quiz-school/story.php?title=conjunctions--but-so-1;
http://a4esl.org/q/h/vm/m-sco01.html.

Form 8b. Modals

For practicing:
https://www.perfect-english-grammar.com/modal-verbs-of-ability-exercise-1.html;
https://www.perfect-english-grammar.com/modal-verbs-of-obligation-exercise-1.html;
https://www.perfect-english-grammar.com/modal-verbs-of-probability-exercise-2.html;
https://www.english-grammar.at/online_exercises/modal-verbs/m005-must-mustnt-neednt.htm;
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-87468.php;
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-97711.php;
https://www.englisch-hilfen.de/en/exercises/modals/form.htm;
https://www.englishgrammar.org/modal-auxiliary-verbs-exercise-6/;
https://www.myenglishpages.com/site_php_files/grammar-exercise-modals.php.
QUIZ
http://esl.fis.edu/grammar/multi/modal1.htm.

Form 6a. Comparisons

For practicing:
https://agendaweb.org/exercises/grammar/comparison/comparatives-1;
https://agendaweb.org/exercises/grammar/comparison/comparison-match;
https://agendaweb.org/exercises/grammar/comparison/comparison-write-1;
http://suz.digitaleschulebayern.de/english/grammar/comp1.htm;
https://first-english.org/english_learning/english_year_2/comparison_adjectives/40_comparison_adjektives_mixed_exercises.htm;
https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/comparison_sentences_3.htm;
https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adjectives_comparison_sentences.htm;
https://www.english-4u.de/en/grammar-exercises/comparison-adjectives.htm.
QUIZ
http://a4esl.org/q/f/z/zz66fck.htm.

Form 6b. Present Simple vs Present Continuous

For practicing:
Present Simple
https://www.perfect-english-grammar.com/present-simple-exercise-7.html;
Present Continuous
https://www.perfect-english-grammar.com/present-continuous-exercise-1.html;
Present Simple vs Present Continuous
https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex02;
https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex03;
https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex04;
https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm;
https://www.perfect-english-grammar.com/present-simple-present-continuous-1.html.
QUIZ
https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive.htm.

Forms 7a,7c1,7c2. Past Simple vs Past Continuous. Used to/would/Past Simple

For practicing:
Past Simple
https://www.perfect-english-grammar.com/past-simple-exercise-8.html;
Past Continuous
https://www.perfect-english-grammar.com/past-continuous-exercise-1.html;
Past Simple vs Past Continuous
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_progressive.htm;
https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex07;
https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex08;
https://www.englishgrammar.org/simple-or-continuous-tense-exercise-2/;
https://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-1.html;
https://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-2.html;
QUIZ:
https://www.proprofs.com/quiz-school/story.php?title=past-simple-past-continuous.
Used to/would/Past Simple
https://learnenglish.britishcouncil.org/intermediate-grammar/past-habit-used-towouldpast-simple;
https://www.englishgrammar.org/or-simple/;
https://www.perfect-english-grammar.com/used-to-exercise-2.html.