an的选择: 元音音素开头的单词用an,辅音音素开头的单词用a.
2.
am , is , are的选择: 单数用is , 复数用are. I 用 am , you 用 are.
3.
have , has 的选择: 表示某人有某物.单数用has , 复数用have. I ,you 用 have .
4.
there is, there are 的选择:表示某地有某物,某人.单数用there is , 复数用there are
an的选择: 元音音素开头的单词用an,辅音音素开头的单词用a.
2.
am , is , are的选择: 单数用is , 复数用are. I 用 am , you 用 are.
3.
have , has 的选择: 表示某人有某物.单数用has , 复数用have. I ,you 用 have .
4.
there is, there are 的选择:表示某地有某物,某人.单数用there is , 复数用there are