
it
[代名詞] 它(指無(wú)生命物, 動(dòng)植物, 性別不詳?shù)挠缀⒌?, 這(個(gè)).
It was no use.
那樣是沒(méi)有用的.
It is too heavy for me to carry.
這個(gè)東西太重了我拿不動(dòng).

its
[代名詞] 它的. (是 it 的所有格. 與 it's 不同, it's = it is)
Every country has its own history.
每個(gè)國(guó)家都有它自己的歷史.
The team won its first game.
這隊(duì)伍贏得了它的第一場(chǎng)比賽.

much
[形容詞] 許多, 大量的, 足夠的.
She does not have much money to spend.
她沒(méi)有很多錢(qián)可以花.
[副 詞] 非常, 很.
I am much older than you are.
我年紀(jì)比你大很多.
[代名詞] 許多, 大量.

music
[名 詞] 音樂(lè), 樂(lè)曲, 音樂(lè)創(chuàng)作.
I like popular music very much.
我非常喜歡熱門(mén)音樂(lè).
That singer wrote her own music.
那歌手自己寫(xiě)歌.

must
[助動(dòng)詞] 必須做 …, 必須, 必定會(huì).
The bridge must be built in six months.
這座橋必須在六個(gè)月內(nèi)完工 (建成).
[名 詞] 必須做的事, 必需品.
Warm clothes are a must in the mountains.
在山裡必須備有保暖的衣服.