關(guān)于副詞在句子中的位置
請回答下面的四個(gè)問題,并且在例句中選擇正確的選項(xiàng)：
1、當(dāng)副詞用來修飾動詞,放在動詞的后面,或句子的最后面?習(xí)慣上不能放在動詞的前面?
例如：
A) I did perfectly it.
B) I did it perfectly.
C) I perfectly did it.
2、當(dāng)副詞用來修飾形容詞,放在形容詞的前面?習(xí)慣上不能放在形容詞后面?
例如：
A) It is extremely correct.
B) It is correct extremely.
3、當(dāng)副詞用來修飾整句話,一般都放在句子的最前面,后加逗號?或者可以放在句子的最后面?
例如：
A) Obviously,it is right.
B) It is right Obviously.
4、當(dāng)句子謂語用助動詞+實(shí)義動詞,副詞可以放在助動詞和實(shí)義動詞之間?
例如：
A) He is happily singing.
B) She has cruelly been killed.
C) It would rapidly be expanded.