文档介绍：情况
变化规则
例词
一般情况
直接加­s
work—works learn—learns
come—comes play—plays
want—wants need—needs
情况
变化规则
例词
结尾为­s，情况
变化规则
例词
一般情况
直接加­s
work—works learn—learns
come—comes play—plays
want—wants need—needs
情况
变化规则
例词
结尾为­s，­x，­sh，­ch或­o
在词尾加­es
pass—passes discuss—discusses
teach—teaches wash—washes
fix—fixes go—goes
结尾为“辅音字母＋y”
变y为i再加­es
carry—carries cry—cries
study—studies worry—worries
情况
变化规则
例词
一般情况
在动词后加­ed
look—looked watch—watched
stay—stayed expect—expected
以­e结尾的动词
后加­d
hope—hoped like—liked
情况
变化规则
例词
以“辅音字母＋y”结尾的动词
变y为i再加­ed
study—studied try—tried
copy—copied carry—carried
以重读闭音节或/r/音节结尾，词尾只有一个辅音字母时
双写词尾的辅音字母再加­ed
stop—stopped clap—clapped
plan—planned prefer—preferred
admit—admitted
permit—permitted
情况
变化规则
例词
一般情况
在词尾直接加­ing
work—working
look—looking
study—studying
以不发音的e结尾的动词
去e再加­ing
have—having face—facing
take—taking write—writing
情况
变化规则
例词
以重读闭音节结尾，且末尾只有一个辅音字母
双写该辅音字母再加­ing
cut—cutting put—putting
swim—swimming
begin—beginning
以­ie结尾的动词
变ie为y再加­ing
lie—lying tie—tying
die—dying
形态
时间
一般
进行
完成
现在
am/is/are
cleaned
am/is/are being cleaned
have/has been
cleaned
形态
时间
一般
进行
完成
过去
was/were
cleaned
was/were
being cleaned
had been cleaned
将来
shall/will
be cleaned
shall/will have
been cleaned
过去将来
should/would
be cleaned
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