I am not sure if she is from Canada.还是I am not sure that she is from Canada.原题 is she from Canada?i'm not sure.合并为一句
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![I am not sure if she is from Canada.还是I am not sure that she is from Canada.原题 is she from Canada?i'm not sure.合并为一句](/uploads/image/z/5798794-58-4.jpg?t=I+am+not+sure+if+she+is+from+Canada.%E8%BF%98%E6%98%AFI+am+not+sure+that+she+is+from+Canada.%E5%8E%9F%E9%A2%98+is+she+from+Canada%3Fi%27m+not+sure.%E5%90%88%E5%B9%B6%E4%B8%BA%E4%B8%80%E5%8F%A5)
I am not sure if she is from Canada.还是I am not sure that she is from Canada.原题 is she from Canada?i'm not sure.合并为一句
I am not sure if she is from Canada.还是I am not sure that she is from Canada.
原题 is she from Canada?i'm not sure.合并为一句
I am not sure if she is from Canada.还是I am not sure that she is from Canada.原题 is she from Canada?i'm not sure.合并为一句
I am not sure if she is from Canada.或者 I am not sure whether she is from Canada or not.
I'm not sure if she is from Canada.
前面那句
都可以,但表达意思略有不同。用if表示我不太确定她是不是来自加拿大,用that的话表示我不太确定她是来自加拿大的(对于她来自加拿大这件事情,我不确定,说不好)
I am not sure if she is from Canada
肯定是用if或者whether也行
that
if.
用that