a cozy
cozy 作名词时可数，单数前通常加 a 或 an。
She knitted a cozy for her teapot.
她给茶壶织了一个保暖套。
(茶壶等的)保暖罩；舒适的座位
a padded covering that keeps a teapot warm
茶壶保暖套
a padded cloth covering to keep a teapot warm
She knitted a cozy for the teapot to keep it warm during breakfast.
她织了一个茶壶保暖套，好让茶壶在早餐时保持温热。
用法提示：句中 cozy 作名词，指茶壶保暖套。
This cozy fits my teapot perfectly and looks lovely on the table.
这个茶壶保暖套完美贴合我的茶壶，放在桌上也很好看。
用法提示：cozy 是名词，表示茶壶保暖套，作主语。
He bought two cozies as a gift for his grandmother.
他买了两个茶壶保暖套作为送给祖母的礼物。
用法提示：cozies 是 cozy 的复数形式，这里作名词，指多个茶壶保暖套。
cozy 作名词时可数，单数前通常加 a 或 an。
She knitted a cozy for her teapot.
她给茶壶织了一个保暖套。
用介词 for 引出保暖套所配的器物。
I need a cozy for this small teapot.
我需要一个给这个小茶壶用的保暖套。
用介词 on 说明保暖套套在哪个器物上。
Put a cozy on the pot so the tea stays warm.
把保暖套套在茶壶上，这样茶就能保温。
复数形式为 cozies，以 -ies 结尾。
The shop sells tea cozies in bright colors.
这家店出售颜色鲜艳的茶壶保暖套。
grammar · medium
易错句子I bought cozy for my teapot.
正确表达I bought a cozy for my teapot.
cozy 是可数名词，英语可数名词单数前必须有限定词（a/an/the 等）；汉语名词没有冠词，泛指“一个”时容易漏掉，所以要加 a。
grammar · medium
易错句子She bought two cozy yesterday.
正确表达She bought two cozies yesterday.
英语可数名词表复数必须变形：以“辅音字母 + y”结尾的词变 y 为 i 再加 -es，所以 cozy 的复数是 cozies；汉语名词没有单复数形态变化，数词后仍用原形，因此容易漏掉复数形式。
grammar · medium
易错句子She put a cozy in the teapot.
正确表达She put a cozy on the teapot.
cozy 是套在茶壶外面的保暖套，表示“套在……上”要用介词 on；汉语说“放在茶壶上/里”都可能用“上/里”，但英语指覆盖在物体表面时不能用 in。
茶壶保暖套
She slipped a tea cozy over the pot to keep the tea hot.
她给茶壶套上保暖套，让茶保持温热。
针织茶壶保暖套
He gave his mother a knitted tea cozy for Christmas.
他送给妈妈一个针织茶壶保暖套作为圣诞礼物。
羊毛茶壶保暖套
A wool tea cozy keeps the pot warm for longer.
羊毛茶壶保暖套能让茶壶保温更久。
给（茶壶）套上保暖套
Put a cozy on the teapot before the tea gets cold.
趁茶还没凉，给茶壶套上保暖套。
Choose the next layer that will help you use cozy with more confidence.
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