havedifficulty接doing还是todo
difficulty的用法及短语？
difficulty的用法及短语？
difficulty是不可数名词，困难
have difficulty in doing sth做某事费力/有麻烦
have difficulty with sth做某事费力/有麻烦
difficulty替换词？
它的替换词:trouble困难，费力，have difficulty/trouble( in )doing sth费力做某事
使用have difficulty doing sth造句？
I have difficulty doing my homework.
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做某事有困难英语三个句子？
1.He had difficulty in doing his homework。
2.He had problems in doing his homework。
3.He had trouble in doing his homework。