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一般疑问句:be(is/am/are)+主语+现在分词
特殊疑问句:特殊疑问词+相应be动词+主语+现在分词+Sth?
the v.-ing forms of the verbs.
1. 一般情况下,在动词后加-i g构成:
work→working sleep→sleeping wait→waiting
study→ studying read→reading talk→talking
2. 不发音的-e结尾的动词去掉e后再加-ing:
smile→smiling move→moving write→writing
若是发音的e结尾,则不能去e: see→seeing agree→agreeing
3. 以重读闭音节或r音节结尾且末尾只有一个辅音字母动词,要双写末尾的辅音字母再加-ing:
sit→sitting plan→planning prefer→preferring
4. 以字母ie结尾的动词,通常将ie改为y,再加ing:
die→dying lie→lying
Write down the v.-ing forms of the verbs.
① play ② watch
③ make ④ swim
⑤ sing ⑥ have
⑦ do ⑧ sleep
⑨ come ⑩ put
playing
watching
making
swimming
singing
having
doing
sleeping
coming
putting
Listen to 2 and then number the pictures.