1.This is ___egg.It is ___big red one a a/an ban/a c an/ \2.My uncle works in___university.He is __teachhera a/an an/a c a/a3.Mike is __American boy.He is in___Huangpu Rivera an/a b a/ \ can/ \

1.This is ___egg.It is ___big red one a a/an ban/a c an/ \2.My uncle works in___university.He is __teachhera a/an an/a c a/a3.Mike is __American boy.He is in___Huangpu Rivera an/a b a/ \ can/ \
1.This is ___egg.It is ___big red one a a/an ban/a c an/ \
2.My uncle works in___university.He is __teachher
a a/an an/a c a/a
3.Mike is __American boy.He is in___Huangpu River
a an/a b a/ \ can/ \

1.This is ___egg.It is ___big red one a a/an ban/a c an/ \2.My uncle works in___university.He is __teachhera a/an an/a c a/a3.Mike is __American boy.He is in___Huangpu Rivera an/a b a/ \ can/ \
你好!
1 an, a
2 a, a
3 an, /

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1,b 2,b 3,c

1 an, a egg首字母是e元音字母 前面加an
2 an, a u元音字母
3 an, / A元音字母；黄浦江是特指 不需加a/an