Answer Key for Self-Check:
walking
painting
to visit
waking up
to have
studying
to finish
waiting
to move
talking
learning
to visit
to call
trying
eating
详细解析
I prefer ______ (to walk / walking) to work when the weather is nice.
Answer: walking
Explanation: When we use "prefer" to talk about general likes or activities, the gerund form is preferred. Here, "walking to work" is a general activity.
中文解释: 当我们用 "prefer" 表示一般的喜好或活动时，通常用动名词。这里的 "walking to work" 是一种日常活动。
She enjoys ______ (to paint / painting) landscapes in her free time.
Answer: painting
Explanation: After "enjoy," we always use a gerund. "Enjoy" is one of the verbs that only takes a gerund when describing an activity.
中文解释: "Enjoy" 后面总是用动名词，表示喜欢某种活动。这里 "painting" 表示她喜欢画画这一活动。
They hope ______ (to visit / visiting) the new art museum next weekend.
Answer: to visit
Explanation: "Hope" is a verb of intention and desire, and it is followed by the to-infinitive. The sentence is about a specific future action, so we use "to visit."
中文解释: "Hope" 表示愿望或意图，后面接动词不定式。句子是关于未来的具体行动，所以使用 "to visit"。
He dislikes ______ (to wake up / waking up) early on Saturdays.
Answer: waking up
Explanation: After "dislike," we use the gerund form to describe an activity that someone generally doesn’t enjoy.
中文解释: "Dislike" 后面使用动名词，表示某人通常不喜欢某项活动，这里是 "waking up early"。
We plan ______ (to have / having) a picnic at the park this Sunday.
Answer: to have
Explanation: "Plan" is a verb of intention and is usually followed by the to-infinitive when talking about specific future actions, like "to have a picnic."
中文解释: "Plan" 表示计划或意图，通常后面跟动词不定式来表示具体的未来行为，这里是 "to have"。
Do you prefer ______ (to study / studying) in the morning or at night?
Answer: studying
Explanation: When discussing general preferences with "prefer," the gerund form is usually used. "Studying" here represents a general activity.
中文解释: 当我们谈论一般的喜好时，"prefer" 后面通常使用动名词。这里的 "studying" 表示一般的活动。
She needs ______ (to finish / finishing) her homework before dinner.
Answer: to finish
Explanation: "Need" is followed by a to-infinitive to express a specific action that is required, like "to finish her homework."
中文解释: "Need" 后面跟动词不定式，用来表示必须做的具体行为，比如 "to finish her homework"。
I don’t mind ______ (to wait / waiting) for my friends if they’re late.
Answer: waiting
Explanation: After "don’t mind," the gerund is used to describe something a person is okay with doing. "Waiting" represents a general tolerance for the action.
中文解释: "Don’t mind" 后面使用动名词，表示某人对某事不介意。这里的 "waiting" 表示对等待这个动作的接受。
They decided ______ (to move / moving) to a new city for their job.
Answer: to move
Explanation: "Decide" is followed by the to-infinitive, as it expresses a specific future action that is chosen, like "to move."
中文解释: "Decide" 后面跟动词不定式，表示一个具体的决定或计划。这里是 "to move"。
He kept ______ (to talk / talking) about the same topic all evening.
Answer: talking
Explanation: "Keep" is always followed by a gerund, as it means continuing an action. "Talking" here describes the repeated action of speaking.
中文解释: "Keep" 后面总是跟动名词，表示持续做某事。这里 "talking" 描述的是他一直在谈论相同的话题。
She started ______ (to learn / learning) Spanish last year.
Answer: learning or to learn
Explanation: "Start" can be followed by either the gerund or to-infinitive with little difference in meaning. "Learning Spanish" represents the action or activity that began.
中文解释: "Start" 后面既可以用动名词，也可以用动词不定式，意思基本相同。这里 "learning Spanish" 表示她开始学西班牙语这项活动。
We intend ______ (to visit / visiting) our relatives during the holidays.
Answer: to visit
Explanation: "Intend" is followed by the to-infinitive, as it indicates a future action that is planned, like "to visit."
中文解释: "Intend" 后面跟动词不定式，表示计划做的未来行为。这里是 "to visit"。
He remembered ______ (to call / calling) his parents on their anniversary.
Answer: to call or calling
Explanation: "Remember to call" means he made the call (specific action), while "remembered calling" means he has a memory of the past event. Either could fit, but context would decide.
中文解释: "Remember to call" 表示他记得打电话这个具体行动，而 "remembered calling" 表示他记得过去做过这件事。两者都可以使用，但具体要根据语境来选择。
They suggested ______ (to try / trying) the new restaurant downtown.
Answer: trying
Explanation: "Suggest" is always followed by a gerund when indicating a recommendation. "Trying" represents the recommended activity.
中文解释: "Suggest" 后面总是跟动名词，表示建议某人做某事。这里 "trying" 表示他们建议尝试这家新餐馆。
I avoid ______ (to eat / eating) too much sugar every day.
Answer: eating
Explanation: After "avoid," we use a gerund to describe a habit or something the person tries not to do. "Eating too much sugar" is the activity they avoid.
中文解释: "Avoid" 后面使用动名词，表示避免做某事。这里 "eating too much sugar" 是他避免做的活动。
