在学习英语的过程中，数量词是我们必须掌握的基础知识。在二年级，我们需要掌握100个数量词，这些数量词涵盖了数字、时间、重量、长度、面积等方面。
以下是100个二年级必须掌握的数量词：
- one
- two
- three
- four
- five
- six
- seven
- eight
- nine
- ten
- eleven
- twelve
- thirteen
- fourteen
- fifteen
- sixteen
- seventeen
- eighteen
- nineteen
- twenty
- thirty
- forty
- fifty
- sixty
- seventy
- eighty
- ninety
- one hundred
- first
- second
- third
- fourth
- fifth
- sixth
- seventh
- eighth
- ninth
- tenth
- eleventh
- twelfth
- thirteenth
- fourteenth
- fifteenth
- sixteenth
- seventeenth
- eighteenth
- nineteenth
- twentieth
- thirtieth
- fortieth
- fiftieth
- sixtieth
- seventieth
- eightieth
- ninetieth
- hundredth
- half
- quarter
- third
- fourth
- fifth
- sixth
- seventh
- eighth
- ninth
- tenth
- dozen
- gross
- score
- dozen and a half
- one and a half
- two and a half
- three and a half
- four and a half
- five and a half
- six and a half
- seven and a half
- eight and a half
- nine and a half
- ten and a half
- foot
- yard
- inch
- mile
- centimeter
- meter
- kilometer
- gram
- kilogram
- pound
- ounce
- cup
- pint
- quart
- gallon
- liter
- milliliter
- square inch
- square foot
- square meter
掌握这100个数量词，可以帮助我们更好地理解和应用英语。在日常生活中，我们可以用这些数量词来描述数字、时间、重量、长度和面积等方面，让我们更加自信地运用英语。
