2. Everybody had gone home when I came to the party. → As soon as 3. This country is unsafe to visit during summer vacation. → It is _____ 4. There has been a dramatic increase in the number of people learning English. → The number of people Paul went to the beach after working hard for a week. → After Paul

2. I came to the party, everybody had gone home

as soon as + S + Vqk, S + had Vp2: ngay sau khi ai làm gì thì ai đã làm gì rồi

3. unsafe to visit this country during summer vacation

be adj to V: như thế nào để làm gì

4. has increased dramatically

bổ nghĩa cho động từ cần trạng từ

5. had worked hard for a week, he went to the beach

hai hành động xảy ra liền nhau trong quá khứ, hành động xảy ra trước chia quá khứ hoàn thành, xảy ra sau chia quá khứ đơn