※ 引述《ostracize (bucolic)》之铭言：
: 4句都对!
: : 2. 文法解答：
: : I wasn't at home last night, and I'm probably not going to be at home
: : tonight either.
: : 但我认为是: ~ I probably am not going to be ~ .不知道我有没有说错?!
: 确定性副词: probably, certainly, definitely, clearly, obviously。
: He has probably arrived by now. (英国英语一般用法)
: He probably has arrived by now. (英国英语强调用法，美国英语一般用法)
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那么否定句ㄋ?!
我的文法书说：
1.在直述句中：助动词 + probably
2.在否定句中：probably + 助动词
for 1.
Paul will probably be in class tomorrow.或
Paul is probably going to be in class tomorrow.
for 2.
Anna probably won't be in class tomorrow.或
Anna probably isn't going to be in class tomorrow.
(所以我认为是：~ I probably am not going to be ~)
*be goint to 中的"be"是视作助动词吗?!
has arrived 中的"has"也是助动词吗?