KeepTidy!STARTERUNIT2STARTERUNIT2

Youcanseethreebottlesunderthetable.基数词+bottle(s)of…······瓶······Iwanttobuytwobottlesofmilk.可数名词（1）瓶子（2）一瓶（的量）

（可数名词）橡皮Ihaveaneraser.例句元音音素开头，不定冠词用an

Mykeysareonthetable.Thisisthekeytotheclassroom.Hardworkisthekeytosuccess.······的钥匙······的关键，通常用单数形式Thekeyisatthebackofthebook.钥匙(2)关键(3)答案名词

Theshopsellsschoolthingstostudents.It’saneasythingforyou.(1)东西(2)事情可数名词

Ineedabottleofwater.Wherearemykeys?Ineedthem.Tomneedstoeathealthyfood.Shedoesn’tneedourhelp.实义动词需要后接名词need作谓语，否定句或疑问句必须借助do/does后接代词后接动词不定式

Lindaneedn’tgotoschooltoday.Needwekeepquietwhenthefilmison?(2)（情态动词）需要(3)（名词）需要否定句疑问句后接动词原形Thereisnoneedforyoutoworryabouthim.无人称和数的变化无人称和数的变化