1. gerunds
   1. used after preposition
      1. a. On
      2. b. at
      3. c. up
      4. some thing like that:)
   2. after possessive adj or " 's"
      1. 1. their
      2. 2.her
      3. 3. Vanessa 's
   3. after the following expressions
      1. a. look forward
      2. b. can't sleep
   4. the following words
      1. 1. enjoy
      2. 2. mind
      3. 3. finish
      4. 4. quit
      5. 5. postpone
      6. 6. delay
      7. 7. admite
      8. 8. appreciate
   5. "To"+gerund
      1. a. (be)used to
      2. b. object to
   6. the (v)of perception
      1. 1. see
      2. 2. hear
2. Infinitives
   1. expressions are followed by"to"(infinitive)
      1. A.(v)+infinitive pattern
         1. 1.appear to
         2. 2.fail to
         3. 3.hope to
      2. B.(v)+object+infinitive pattern
         1. a.ask+object+to
         2. b.order+object+to
   2. Infinitives without"TO"
      1. 1. Will/shall/can/may/do/must...
      2. 2.see/watch/feel/smell...
      3. 3.make/let...
      4. 4.had better/cannot but...
   3. after adj
      1. used with adj of personal qualities,the preposition which follows is"of"
         1. kind of/crazy of
      2. with adj of impersonal,the preposition which follows is"for"
         1. easy fo/important for...
   4. other infinitive partterns
      1. a. Too+adj+to ,It is+adj+to
         1. too bad to/too great to...
         2. it is cooler to sit
      2. b.adj/adv+enough+infinitive
         1. not old enough...
      3. c. not enough to=too...to
         1. too old to /too heavy...
      4. d. so+adj/adv+as+infinitive
         1. so foolish as to leave...
      5. e."only to"pattern
         1. only to find...
3. the following(v)can be followed by either gerunds/infinitive
   1. 1.stop
   2. 2.remember