很高兴能够在这里回答你的问题,
介词后用人称代词宾格
介词后用动词ing
情态动词can/may/must/should后面用动词原形
enjoy,spend后面用.doing
ask sb.to do sth.
tell sb.to do sth.
help sb.(to) do sth
watch/see sb.do sth
很高兴能够在这里回答你的问题,
介词后用人称代词宾格
介词后用动词ing
情态动词can/may/must/should后面用动词原形
enjoy,spend后面用.doing
ask sb.to do sth.
tell sb.to do sth.
help sb.(to) do sth
watch/see sb.do sth