unit1
1.there be句型表示“某处有某物”,be动词用is还是用are遵循下面的原则:
①be动词后面 如果跟的是单数名词或不可数名词,就用is;
there is a pencil case in the school bag.
there is some soup/milk /tea/coffee/juice/water/chocolate.
② be动词后面如果跟的是可数名词的复数,就用are.
there are some desks in the classroom.
③be动词后面如果跟的是不止一种物品,就根据离它最近的物品选用is或are.(就近原则)
there are some pictures and a telephone.
there is a telephone and some pictures.
2.there be 句型的否定形式:在be动词的后面加not(is not可以缩写为isn't,are not可以缩写为 aren't)把some 改成any。
例:there is a pencil in the pencil-box.(改为否定句)
there isn't a pencil in the pencil-box.
there are some crayons on the desk.(改为否定句)
there aren't any crayons on the desk.
3.“some”和“any”都有“一些”的意思.“some”一般用于肯定句,“any”用于否定句和一般疑问句。但在一些表示委婉请求,想得到对方肯定回答的疑问句中,也用“some”.
例:1.there are some watermelons in the basket.(肯定句)
2.there are