hear to do 表示动作的全过程;hear doing表示动作正在进行.
如:1、She heard the telephone ringing.她听见电话铃正在响.
2、A pen was heard to drop. 我听见一支笔掉落.
是hear sb to do sth 还是hear sb doing sth
是hear sb to do sth 还是hear sb doing sth
英语人气:455 ℃时间:2019-11-12 01:02:32
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