# 2.4.4. 元音 + 元音（Vowel + Vowel）
“元音 + 元音” 的组合之中，会出现**加音**（*intrusion*）。
In combinations of "vowel + vowel", an *intrusion* sound may occur.
前一个元音以 ɪ/i/iː 结尾，会出现加音 ʲ：
When the first vowel ends in ɪ/i/iː, an intrusive ʲ sound emerges:
> - *I am* - ˈaɪ ˈæm ⭢ ˈaɪʲæm
> - *He is* - ˈhiː ˈɪz ⭢ ˈhiːʲɪz
> - *She is* - ˈʃiː ˈɪz ⭢ ˈʃiːʲɪz
> - *They are* - ˈðeɪ ˈɑːr ⭢ ˈðeɪʲɑːr
注意：一些以 i 结尾的动词，使用进行时态的时候，末尾会加上 *ing*，即，ɪŋ。比如，*study* ˈstʌdi 的现在分词形式是 *studying* ˈstʌdi.ɪŋ —— 这里会出现加音 ʲ，即最后一个音节变成 jɪŋ…… 可是，在自然读音中，它更接近 jəŋ，所以，*studying* 的读音，词典里标注的当然还是 ˈstʌdiɪŋ，但，读出来的更接近 ˈstʌdiʲəŋ。
Here's a note about verbs that end with i: when you're using these verbs in the present progressive tense, you add *ing* to the end, pronounced as ɪŋ. Take the verb *study* ˈstʌdi for example, which present participle form is *studying* ˈstʌdiɪŋ. There's a subtle addition of a ʲ sound, making the last syllable sound like jɪŋ. However, in natural pronunciation, it sounds closer to jəŋ. Therefore, even though the pronunciation of *studying* is annotated as ˈstʌdiɪŋ in dictionaries, it should be pronounced more like ˈstʌdiʲəŋ.
再比如：
More examples:
> *applying* *carrying* *crying*
>
> *denying* *qulifying* *replying*
>
> *satisfying* *specifying* *spying*
前一个音节以 ʊ 结尾，比如 ʊ/uː/aʊ/oʊ，会出现加音 ʷ：
Similarly, when the preceding syllable ends in ʊ, such as ʊ/uː/aʊ/oʊ, an intrusive ʷ sound appears:
> - *Go away* - ˈɡoʊ əˈweɪ ⭢ ˈɡoʊʷəˈweɪ
> - *Do all* - ˈduː ˈɔːl ⭢ ˈduːʷɔːl
> - *Do it* - ˈduː ˈɪt ⭢ ˈduːʷɪt
> - *Throw it* - ˈθroʊ ˈɪt ⭢ ˈθroʊʷɪt