文档介绍：Answers to Sally’s letter: 1. to thank 2. to talk 3. to have 4. e-mail 5. to receive 6. to go 7. watch 8. borrow 9. visit 10. spend 11. write 12. tell 13. to see 14. make 15. come 课本练习 Answers to the e-mail: 1. visiting / to visit 2. chatting 3. visiting 4. pretending 5. chatting / to chat 6. stop 7. chatting 8. to do 9. pass 课本练习 mean to do: 打算做 mean doing: 意味着 eg. I mean e earlier today. Missing the train means waiting for another hour. try to do: 努力做某事 try doing: 尝试做某事 eg. She tried to finish the work as quickly as she could.
I tried doing the exercise in a different way. go on to do: 继续做另一件事 go on doing: 继续做同一件事 eg. After doing the cooking, mother went on to do some washing.