动词ing的变化规律:
1)直接加ing ,如: open-opening, clean-cleaning,
meet-meeting, sing-singing, study-studying, …
2) 去掉词尾不发音的e ,如:take-taking,
close-closing, come-coming, drive-driving, have-having, use-using, write-writing,
practice-practicing, …
3) 重读闭音节的,双写最后的字母,加 ing , 如: sit-sitting, put-putting, begin-beginning , get-getting, swim-swimming,
run-running, cut-cutting, become-becoming, …
张运龙 :(2019-10-09 19:26)
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