英文文法問題 急~

She was still smiling. 她仍然在笑。
這個 smiling 是「現在分詞」present participle----表示正在進行。
I think eating on a balanced diet can help your health.
我想均衡飲食對你健康有幫助。
這個 eating 是「動名詞」 gerund----由動詞改作名詞。
S0rry,要吃飯了，後續。

2008-01-17 21:52:16 補充：
She was still smiling. 這句是「過去進行式 」past continute tense.進行式是由 verb to be present participle 組成的。I think eating on a balanced diet can help your health. 這句是現在式 presnt tense.' think ' 和 ' eat ' 都是動詞，但在這句中 think 是主要動詞，eat 要由動詞轉為名詞所以是動名詞，要加 ing 與 present participle 用法不同，解法也不同。

2008-01-17 22:09:38 補充：
上面第四行出了怪字，更正如下：think 和 eat 都是動詞，She was smiling. 她是正在笑。was--verb to be / smiling--present participleShe likes smiling. 她喜歡笑。likes--verb / smiling--gerund 笑變成了名詞叫「動名詞」I am eating .... am--verb to be / eating--present participleI think eating.... think--verb / eating--gerund

2008-01-17 22:19:54 補充：
他正在跑步。He is running. 這個 running 解作正在跑。他喜歡跑步。He likes running. 這個 running 跑步（是一項運動的名稱）

Simple Continuous Tense

is/am/are+___ing

-now

-Listen!/Look!

1.It is because the sentence is using Past Continues Tense.We form Past continues Tense like this:Subject+WAS/WERE+**ing+Object.

2.In NO.2 sentence,you need to add "ing" because the sentence have TWO verd,SO we need to add "ing" in the second word.

She was still smiling 中的 smiling 要加 -ing 的原因是因為前面用了 was ( 即是用了 past continous tense )。
I think eating on a balanced diet can help your health . 中的 eating 要加 -ing 的原因是因為 think 是一個 gerund。
在什麼時候加 + ing
1 ) gerund ( 即在 like , hate 等詞後用 )

ing 在進行中使用,have now,every時候用.