[whilst的用法]whether的用法

1 I saw him a little while ago 一般过去时 2 They have been here since a little while ago有since存在，你就用现在完成时 3 They said they had been there here since a little while before。

sound like和sound的用法1sound作名词，意为“声音”，有可数和不可数两种用法2sound作连系动词，意为“听起来”，“听上去给人以某种印象”，常接形容词作表语，不接副词还可接名词，介词短语或从句3。

1安静的英文翻译是quiet，quiet词性较多，常常作为形容词作表语使用较多2例句Talk to the infant in quiet tones whilst maintaining eye contact用轻声的语调和宝宝说话，要一直保持眼神的接触。