动词的缩写 is='s I am=I'm are='re is not=isn't /iznt/ are not=aren't /a:nt/ do not=don't does not=doesn't was='s was not=wasn't did not=didn't can not=can't have='ve has='s have not=haven't has not=hasn't will='ll will not=won't shall not=shan't
来自：英语语法大全：动词的变化
（括号里有提示要用什么动词，be=是 (is/are)） 题目： 1、I ___ (be) wondering if he's at home. 2、The bottle of water___ (be not) on the table. 3、My brother__ (be) sitting on the desk. 4、I ___ (do not) want to eat ice-cream now. 5、___ (do not) forget to take out the trash! 6、We ___ (can not) swim here! It's dangerous! 7、I ___ (will be) an astronaut someday. 8、We ____ (are not) together at the moment 9、Pearl___ (be) very far away from David. 10、You ___ (shall not) touch that vase.
