leaf

leaf — noun

1. A flat, green growth on a plant stem or branch that uses sunlight to produce foo

1.名詞A2
釋義

A flat, green growth on a plant stem or branch that uses sunlight to produce food for the plant.

例句

In autumn, the maple tree in our garden turns red before its leaves fall off.

collocation: leaves fall off

Mizuki picked up a dry leaf from the ground and pressed it into her notebook.

同義詞
  • foliage

    refers to all the leaves of a plant together, not a single leaf

  • frond

    used specifically for the large leaves of ferns or palm trees

反義詞
  • root

    the part of a plant that grows underground

  • stem

    the main stalk that supports the leaves

常見錯誤

The leafs fall in autumn.
The leaves fall in autumn.
💡The plural of 'leaf' is 'leaves,' not 'leafs.'

2. Describes a plant or tree at a time when it is covered with fully grown leaves.

2.名詞B1
釋義

Describes a plant or tree at a time when it is covered with fully grown leaves.

例句

The oak trees in the park are already in leaf by early May.

idiomatic phrase: in leaf

Hugo knew spring had arrived when the cherry trees along the lane were in leaf.

同義詞
  • leafy

    an adjective describing a plant that has many leaves; broader than 'in leaf'

反義詞
  • bare

    describes a tree without any leaves, especially in winter

文法句型

be in leaf

用法筆記

This sense only occurs in the fixed phrases 'in leaf' and 'stay in leaf.' It cannot combine with other prepositions — forms like 'on leaf' or 'with leaf' are incorrect.

常見錯誤

The tree is with leaf now.
The tree is in leaf now.
💡The correct fixed phrase is 'in leaf,' not 'with leaf.'

3. A phrase describing a plant or tree that is starting to produce new leaves from

3.名詞B1
釋義

A phrase describing a plant or tree that is starting to produce new leaves from its branches, commonly happening at the start of spring.

例句

The apple trees in the orchard come into leaf around mid-April every year.

phrasal pattern: come into leaf

Christopher noticed the willow by the river had come into leaf overnight.

文法句型

come into leaf

用法筆記

This describes a process (beginning to grow leaves), not a completed state. To describe a plant that already has leaves, use 'in leaf' (sense 2) instead.

常見錯誤

The tree came into leaf last week and still has no leaves.
The tree came into leaf last week, so it now has small new leaves.
💡'Come into leaf' means new leaves are appearing; it does not mean the tree remains without leaves.

4. A single sheet of paper in a book, magazine, or manuscript, with writing or prin

4.名詞B2
釋義

A single sheet of paper in a book, magazine, or manuscript, with writing or printing on one or both sides.

例句

A loose leaf had fallen out of the old novel and onto the library floor.

collocation: loose leaf

The printer copied the report on both sides of each leaf to save paper.

collocation: both sides of each leaf

同義詞
  • page

    more common in everyday use; refers to one side of a leaf rather than the whole sheet

  • sheet

    emphasises the physical paper rather than its position in a book

5. A flat board that forms part of a table's top and may be slid into position or s

5.名詞B2
釋義

A flat board that forms part of a table's top and may be slid into position or stored underneath, allowing the table surface to be enlarged or reduced.

例句

Andrés pulled out the table leaf so all ten guests could sit together.

collocation: pull out the leaf

When not in use, the two table leaves slide under the main surface.

mechanical action: slide under

同義詞
  • extension

    a more general term; a table leaf is a type of extension

6. Gold, silver, or another precious metal that has been beaten or pressed into a v

6.名詞C1
釋義

Gold, silver, or another precious metal that has been beaten or pressed into a very thin, flexible sheet, used as a decorative covering.

例句

The artist applied gold leaf to the picture frame with a soft brush.

material: gold leaf

The craftsman used silver leaf to decorate the dome of the old temple.

material: silver leaf

同義詞
  • foil

    a thin metal sheet, but usually thicker than leaf and less often made of precious metal

  • lamina

    a technical term for any thin layer of material

用法筆記

When combined with a metal name, no article is used: 'gold leaf,' 'silver leaf,' not 'a gold leaf.' Can also be used as a compound modifier: 'gold-leaf decoration.'

常見錯誤

The statue was covered with a gold leaf.
The statue was covered with gold leaf.
💡'Gold leaf' is uncountable; do not use 'a' before it.

leaf — verb