你好.一般说来,这由你的原始句决定:
I heard him sing a new song (强调全过程)
-------He was heard to sing a new song
I heard him singing happily when I saw him (强调正在唱)
------When seen, he was heard singing happily.
ok了吗?
你好.一般说来,这由你的原始句决定:
I heard him sing a new song (强调全过程)
-------He was heard to sing a new song
I heard him singing happily when I saw him (强调正在唱)
------When seen, he was heard singing happily.
ok了吗?