听见某人正在做某事
hear sb doing sth;hear sb. doing;hear sb. doing sth.;hear sb.doing sth;doing
没听见某人在做某事
don't hear sb doing sth
hear
sb
doing
sth...
not
hear
sb
doing
sth
...直接加NOT就OK。。但是你的第二个汉语短语这样表达不太准确哦。。。
应该是没听说某人在做某事。。。
i heard somebody doing something
i didnt heard somebody do something