I have been to Beijing before. ______
1个回答
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C
表示说话者也适用上述情况，用so
+
be/have/has/情态动词+主语
答薯稿携句可敬雀转换成：I
have
been
to
Beijing
before,
too.
故用have
若此数伏题改为：I
had
been
to
Beijing
.
答句用SO
had
i
(=I
had
been
to
Beijing,
too.)
若此题改为：I
went
to
Beijing
.
答句用SO
did
i
(=I
went
to
Beijing,
too.)
表示说话者也适用上述情况，用so
+
be/have/has/情态动词+主语
答薯稿携句可敬雀转换成：I
have
been
to
Beijing
before,
too.
故用have
若此数伏题改为：I
had
been
to
Beijing
.
答句用SO
had
i
(=I
had
been
to
Beijing,
too.)
若此题改为：I
went
to
Beijing
.
答句用SO
did
i
(=I
went
to
Beijing,
too.)
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