each加单数还是复数名词

　　例句：

　　He articulated each syllable.

　　他清楚地说出了每个音节。

　　Each individual flower is tiny.

　　每一朵花都很小。

　　Each answer is worth 20 points.

　　每题为20分。

　　He handed each of them a page of photos.

　　他递给他们每人一张照片。

　　Our host shook each of us warmly by the hand.

　　主人热情地和我们每个人握手。