文法說明

1. used to + 原形動詞

用來表示過去的情況或習慣，但現在已經不存在了 。 其意思為「過去常常做什麼事」。整體句型為過去式(used是過去式)。其否定句與疑問句需透過did助動詞來呈現。
例如:
(肯定句) I used to play basketball a lot.
(否定句) I didn't use to play basketball.
(疑問句) Did you use to play basketball?
[使用did後，used-->use]

2. be(or get) used to + 名詞/動名詞(Ving)

用來表示現在或過去的習慣，其意思為「習慣於什麼行為」。其否定句與疑問句可直接修改be動詞，亦可將be動詞改為其他時態。
若採用get取代be動詞，則為「逐漸、 慢慢習慣於某行為」。其否定句與疑問句需透過did助動詞來呈現，亦可將get改成其它時態。
例如:
He has lived here for over five years, so he is used to the hot and humid weather now.
I’m not used to getting up early.
I’m not used to the hot and humid weather here yet, but I’m trying to get used to it.

3.  be used to + 原形動詞

用來表示用途，其意思為「被用來做什麼」。其否定句與疑問句可直接修改be動詞，亦可將be動詞改為其他時態。
例如:
A pen is used to write.

常見錯誤

1. used to後面應該要接原形動詞
   Alex used to living in Tainan. (X)
   Alex used to live in Tainan. (O)
   
   Jane used to worked at a car company. (X)
   Jane used to work at a car company. (O)

2. be  used to 表示「被用來做什麼」，後面應該要接原形動詞
   Clocks are used to telling time. (X)
   Clocks are used to tell time. (O)

3. be used to 表示「習慣某種行為」後面應該要接Ving
   Are you used to speak English every day? (X)
   Are you used to speaking English every day? (O)

文法說明

1. 主詞(人) + need + to 原形動詞

2. 主詞(人) + need + 受詞 + to 原形動詞

3. 主詞(事物) + need + Ving  = 主詞(事物) + need + 受詞 + to be Vpp

須以南臺學號信箱登入google之後才能作答。