___at the door ,i'v hardly rung the bell ____ the door opened.為什么用standing ,before?
___at the door ,i'v hardly rung the bell ____ the door opened.為什么用standing ,before?
英語人氣：527 ℃時間：2020-01-27 08:06:29
優(yōu)質(zhì)解答
1）standing 是屬于現(xiàn)在分詞.語法規(guī)定,如果動詞要做主語,不能用原形,只能用ing形式或不定式（to do）,這里不能用不定式是因為不定式表示目的,而這里表示當(dāng)時的狀態(tài)就是正在站在門口,所以用ing形式.2）hardly .when/ ...
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